Choppy playback only in timeline - 19.1.2

After updating to 19.1.2 build 3 playback in my timeline window is choppy. It looks almost like it's dropping every other frame resulting in stuttery playback.

The project is set up like all my projects and was working fine before updating. Footage is 1080 59.94, timeline is 1080 23.976. The footage plays perfectly until it's dropped into the timeline. No dropped frames indicated in the timeline window (solid green light). Very fast, brand new computer.

Even proxies have the same choppy stutter in the timeline window so I know it's not my footage. It's the exact setup I've been editing with forever.

The same project plays perfectly on our older/slower computer running Resolve 19.1.1 build 8.

I've tried everything I can think of or find online.

Curious. What are your retiming settings set to. If its says project settings, than there should be info in the project settings. Specifically what are retime process and motion estimation settings for the project, timeline or ultimately clip that is causing choppy playback?

You said: "Footage is 1080 59.94fps, timeline is 1080 23.976fps" so that would be first thing I would check as well as what is fps setting in the clip attributes to make sure there is no surprises there.

Do you have any other hidden keyframes, effects or anything like that? Or just a simple timeline and a footage that play choopy? And is this new fresh project after update or something you continued working on? It would be good to confirm it also happens on new project and timelime as well in the old projects. And just to make sure clearing cache would also be good if there is anything in the render cache manager.

You mentioned proxies. And you said its the same with proxies, so maybe it is not footage, but something related to footage.

You can also post a diagnostics log for developers to take a look, in case its something external on your machine.

Thanks for the reply. The timeline is simple, no effects, no color, no speed, no keyframes, no transitions...just selects placed on a timeline. Clip attributes are all the same (59.94 drop frame, data levels auto). Turning off drop frame does not help.

The clips play smoothly until placed into a 23.976 timeline. When placed in a 59.94 playlist the footage plays smoothly, which all leads me to think Resolve is not handling the math correctly or something. The exact same footage and project plays correctly in 9.1.1.

Frame interpolation was set to Nearest/Standard Faster/Medium but changing those settings does not fix the issue.

This project was started on another computer in 9.1.1 but I can't see any reason this computer, which is much better, could cause footage to play choppy in 23.976 timeline ONLY. I can't find a logical explanation that places the blame on the computer but I could be wrong.

Attaching technical specs from the log.

I'll let developers to figure out if there is something else at play. The only thing I can think of is caching problem of some sort. But I'm not sure. If I had the project I could check it, and if you don't mind sharing a file with the project I'll be happy to try to test it and see if I can figure out what the problem is. But other than that, I don't know what else to say. I assume you have most of it covered.

I tested this in Studio 19.1.2 for Windows using a project created a loooog time ago and an underpowered GTX 1070 8GB...and it worked fine.

So...maybe a Settings or System issue?

You might also try testing a new project in 19.1.2, just for comparison. Maybe test a different clip as well?

I did try an new project and got the same results. I can't think of anything with my actual computer that could cause clips to only play choppy in a timeline and I can't find anything in Resolve that would cause it. There must be something I'm missing but I don't know how, this is the same workflow I have always used without any issues.

UPDATE: This project plays smoothly on an older computer using 19.1.1 so I uninstalled 19.1.2 on the new computer and reinstalled 19.1.1. The problem is still there so I guess it's my computer???

I don't see what on my computer could cause 59.94 footage to stutter in a 23.976 timeline though. Nothing about this makes sense.

What's the hardware on the problem machine?

What GPU driver version?

Are you certain you're using Studio? (The Free version mat not be using the GPU fully.)

Do you have the Preference checked to use the GPU for decoding?

This happens with me with audio, but the moment I go to Fairlight, it plays fine.

What's the hardware on the problem machine?

What GPU driver version?

Are you certain you're using Studio? (The Free version mat not be using the GPU fully.)

Do you have the Preference checked to use the GPU for decoding?

Processor - AMD Ryzen 9 9950X 16-Core Processor 4.30 GHz
Motherboard - Asus TUF B650M-PLUS WIFI
Video card - Asus GeForce RTX 4080 SUPER ProArt 16GB
RAM - 96.0 GB
GPU - NVIDIA Studio driver 566.36
Windows 11

Yes, Studio version.
Yes, GPU decoding is on.

It's a brand new system from Puget so it can handle what I'm asking it to do. Nothing I try works, 59.94 footage in a 23.976 timeline looks awful. I've probably edited 1000+ projects in Premiere and Resolve with this exact timeline/footage configuration with no issues.

OK.

In Preferences>System>Memory and GPU, uncheck the two Auto options and manually select CUDA and the 4080. Make sure all displays are plugged into the 4080.

OK.

In Preferences>System>Memory and GPU, uncheck the two Auto options and manually select CUDA and the 4080. Make sure all displays are plugged into the 4080.

Already setup that way, unfortunately.

Damn. This one's baffling.

You don't have anything overclocked? You don't have any 'tuning' software installed?

Damn. This one's baffling.

You don't have anything overclocked? You don't have any 'tuning' software installed?

No to both.

Damn. This one's baffling.

You don't have anything overclocked? You don't have any 'tuning' software installed?

No to both.

Try playing in Fairlight. Does it stutter?

Try playing in Fairlight. Does it stutter?

Hadn't tried that but yes it does, exactly the same.

If you convert the footage to CineForm or DNxHR and replace the files with those, keeping everything else as it is, does it still play choppy?

If you convert the footage to CineForm or DNxHR and replace the files with those, keeping everything else as it is, does it still play choppy?

Still choppy.

One thing I am noticing is that the choppiness is much more noticeable on my second monitor, but again only when playing the timeline. There is something about this computer that doesn't like sending this mixed frame rate to the second monitor.

I know (I think) it's not the monitor because this monitor works normally with other computers. I don't get it, all my drivers are up to date etc.

One thing I am noticing is that the choppiness is much more noticeable on my second monitor, but again only when playing the timeline. There is something about this computer that doesn't like sending this mixed frame rate to the second monitor.

I know (I think) it's not the monitor because this monitor works normally with other computers. I don't get it, all my drivers are up to date etc.

And when you use only one, the main monitor?

And when you use only one, the main monitor?

The footage in the timeline preview window on monitor 1 appears to play smoothly.

Monitor 1 (main) uses the display port. This monitor is displays Resolve and playback in the timeline window appears to be normal.

Monitor 2 (video clean feed) uses the HDMI port. 599.94fps footage plays normally on this monitor when I'm simply viewing the source or if it is placed into a 59.94 timeline. The choppiness occurs when the same footage is played from a 23.976 timeline. NVIDIA Studio driver is up to date. This same monitor works perfectly well when attached to a different computer.

I don't know for sure if it's a video card/monitor issue but I think it probably is. I'm running out of variables to cross off the list. I even tried a different HDMI cable. I've never had an issue like this so I'm not an expert in troubleshooting it.

Monitor 2 (video clean feed) uses the HDMI port. 599.94fps footage plays normally on this monitor when I'm simply viewing the source or if it is placed into a 59.94 timeline. The choppiness occurs when the same footage is played from a 23.976 timeline. NVIDIA Studio driver is up to date. This same monitor works perfectly well when attached to a different computer.

I don't know for sure if it's a video card/monitor issue but I think it probably is. I'm running out of variables to cross off the list. I even tried a different HDMI cable. I've never had an issue like this so I'm not an expert in troubleshooting it.

If its not cable, and its not drivers, than it could be something in the system, operative system itself.

What about refresh rate settings? I search for second monitor playback issues and here is a standard list of potential issues, not sure if you checked them all. One is refresh rate section.

https://www.digitaltrends.com/computing ... esolutions

When I swap monitors...DR on monitor 2 and clean feed on monitor 1...the clean feed once again looks choppy but the playback in the resolve window looks OK.

So something appears to be going on with the feed. I have checked all display settings and options a million times. Stumped and ready to solve this (if there is a solution).

So something appears to be going on with the feed. I have checked all display settings and options a million times. Stumped and ready to solve this (if there is a solution).

One other thing to try if you haven't already. Just to satisfy my curiosity if you will. Probably won't make a difference, but still...

sshot-1621.jpg (33.26 KiB) Viewed 43323 times

Performance Mode Automatic/Manual: A trio of radio buttons let you choose between Automatic (default) and Manual (user selectable) behaviors when you turn on Performance Mode in DaVinci Resolve, or you can turn Performance Mode Off altogether. Set to Automatic, Performance mode automatically optimizes a variety of operations in a bid to balance performance with the necessary level of image quality, for fast onscreen performance while always maintaining the highest level of quality for video output. Set to Manual, there are three different settings you can choose to disable for instances where a particular performance tradeoff Resolve is making results in an undesirably noticeable reduction in image quality in Performance Mode:

Optimized Sizing: Relates to how image resizing is handled.
Optimized Decode Quality: Relates to how clip resolution vs. timeline resolution is handled.
Optimized Image Processing: Relates to how image processing operations are handled.

Thanks for the suggestions. This is something I have tried but it doesn't help. I currently have it set to disable but have tried all options. Disabled is my usual choice though.

I guess you tried so many things its hard to think of something you haven't. I probably would have more ideas if I was there, physically, otherwise I can only guess. Curious problem though. I would be curious to know, once you figure it out, what it was the reason behind it. Good luck with the adventure.

I guess you tried so many things its hard to think of something you haven't. I probably would have more ideas if I was there, physically, otherwise I can only guess. Curious problem though. I would be curious to know, once you figure it out, what it was the reason behind it. Good luck with the adventure.

Looking at some past forum posts with similar clean feed issues I fear I might never find a solution. If I do I will for sure post the solution.

I tried hitting ctril+F for cinema view on monitor 1 and it has the same choppy playback so I no longer think it's just the video clean feed going to monitor 2.

There's something with the playback from the timeline. Like I said, I've edited probably 1000 projects with 59.94 footage in a 23.976 timeline and it always plays smoothly until now on this computer.

I tried hitting ctril+F for cinema view on monitor 1 and it has the same choppy playback so I no longer think it's just the video clean feed going to monitor 2.

There's something with the playback from the timeline. Like I said, I've edited probably 1000 projects with 59.94 footage in a 23.976 timeline and it always plays smoothly until now on this computer.

Would you like me to try. You could export a chuck of footage and a project that you are using, so I can try it on my machine. Maybe there is some setting you missed. And if its playing smoothly, its extra confirmation that its not resolve or even the footage/project. But something that is on that machine, hardware or software that does not play well with resolve for some reason.

Monitor 2 (video clean feed) uses the HDMI port.

From the 4080, right next to the Display Port? It's not plugged into the mobo?

Monitor 2 (video clean feed) uses the HDMI port.

From the 4080, right next to the Display Port? It's not plugged into the mobo?

Jim, you just (mostly) solved my problem. Yes, I had both monitors coming from the 4080 BUT after reading your question, out of desperation I took the clean feed form the motherboard and it worked! At least now I know it's some miscommunication between Resolve and the 4080. It's something I still want to "resolve" but at least for now I have a workaround.

THANK YOU to everyone who has commented and helped! If anyone knows why my GPU and Resolve aren't seeing eye-to-eye please let me know.

THAT is weird.

(We do get reports of things NOT working when done that way, so keep this in mind as you go forward.)

Another thought. The 4080 is seated in a 16x PCIe slot? The UEFI is configured properly? You have no other cards taking up PCIe lanes?

THAT is weird.

(We do get reports of things NOT working when done that way, so keep this in mind as you go forward.)

Another thought. The 4080 is seated in a 16x PCIe slot? The UEFI is configured properly? You have no other cards taking up PCIe lanes?

I'm working with Puget, the builders of this workstation, to sort out some possible technical issues. No other cards installed. On paper there should be no issues but obviously something is going on. Any monitor coming from the video card stutters when trying to play a mixed frame rate timeline. I've probably exhausted my own troubleshooting abilities at this point so hopefully Puget can find a solution. I have a ticket with Blackmagic as well but I'm not getting much from that.

At least I have my temporary workaround so I can continue editing the mountain of projects I have.

Hi,
I have a similar as the original poster.
But have to figure out the details further.

It is related to NVIDIA graphic cards, since version 19.0 of Rrsolve, this problem is known. Look for topics in september 2024, and you will see that most of users reverted back to the 18.6 version... Still waiting for developers to do something.

Here is my system config :
- Windows 11 version 23H2
- 32go RAM with i7
- RTX 3070 graphic card with pilot with driver version 32.0.15 in studio mode

It is related to NVIDIA graphic cards, since version 19.0 of Rrsolve, this problem is known. Look for topics in september 2024, and you will see that most of users reverted back to the 18.6 version... Still waiting for developers to do something.

That's a bummer because Puget is sending me a new GPU to swap. I was hoping that would fix it. I'll report back but it doesn't sound like it will be with good news.

Can confirm.

Same thing here. On an A6000. Framerate indicator shows that no frames are dropping, but visually it looks like I'm getting every other frame or something. It's subtle, but it's definitely there and just "feels" choppy. Incredibly irritating to work with.

I'm also seeing graphics interface glitches in Fusion. Anything that is an overlay, like the gizmo for transform, the spline for masks, the paint brush, etc are either missing completely or visually glitched out.

The stuttering is seen on my Clean Feed second display. Main display is much smoother. Same setup was fine prior to 19.1.

Can confirm.

Same thing here. On an A6000. Framerate indicator shows that no frames are dropping, but visually it looks like I'm getting every other frame or something. It's subtle, but it's definitely there and just "feels" choppy. Incredibly irritating to work with.

I'm also seeing graphics interface glitches in Fusion. Anything that is an overlay, like the gizmo for transform, the spline for masks, the paint brush, etc are either missing completely or visually glitched out.

The stuttering is seen on my Clean Feed second display. Main display is much smoother. Same setup was fine prior to 19.1.

I think the reason our main displays look smoother is simply because the window is smaller. I am swapping out my GPU tonight but I have a bad feeling it's not going to fix anything. It sounds like at Resolve issue.

Before 19.1 was never an issue at all. Same exact setup. Same project. 19.1 has brought with it a load of GPU type glitches on my Nvidia card.

Update: I swapped out the GPU (same model) and it did not fix the problem. Clearly this is a Resolve issue that needs to be fixed. Luckily I have a temporary workaround but it's not ideal.

Yep. It's something that got introduced in 19.1.

I've been working on the same project and same rig for nearly a year, and as soon as I updated to 19.1 it was immediately apparent the differences. All GPU and driver related.

Other thing I've noticed is, if I use for example Voice Isolation - ie: one of the "AI" powered audio effects, scrolling through that material in the timeline comes to a crawl regarding the UI. Trying to scrub the playhead, and scroll the timeline left or right.

Again, this was not previously the case.

Are you referring to the Cut or the Edit page?
I can scrub or use JKL in the Edit page just fine with Voice Isolation activated. I see some minor choppiness in the Cut page.

Edit page. As mentioned above this is an issue with Nvidia. Likely not all cards as well. But definitely mine and others have mentioned.

Do you have a speed editor?

I am just putting this out there in case it helps someone.

Fun fact for me with 19.1.2 lag. My speed editor didn't connect properly as it sometimes does, but this time the effect with 19.1.2 was that it lagged when this happened. Timelines were choppy with 25fps zoom recording. lol. Once I disconnected the speed editor and re-paired it to my laptop Bluetooth, all was well.

I do have a Speed Editor and I am familiar with this bug if you have it paired to more than one machine. You can actually see in the Bluetooth Preferences that it is Disconnecting and Reconnecting constantly. At the current moment Speed Editor is not connected.

For me however this is not the issue.

How long the speed editor bug been an issue? I never came across it in my searches. Wish I had. Then again it’s rather obscure.

Hi everyone,

Not sure if I solved this one but I've spent about 4 hrs trouble shooting.
Quick Read Solution:
I turned off Dual Screen in workspaces.

Long story of how it got to this problem read on:

Point 1:
3 days ago I just bought the Asus 4080 Super Pro Art 16GB. Previously been using Asus Strix 1080ti x 2 (giving me 22GB VRAM total). It was all working fine until the cards starting giving choppy and crashes and more importantly not doing very well in Fusion comps. (1080p timeline with 4k 10bit mxf and 8k raw footage. Smart Caching used. )
I rushed out and bought the new card and swapped 1080ti's for 4080 super.

Point 2:
After a long installation of the new 4080 Super I immediately started working on the over due project and noticed 16GB of VRAM constantly being around 14-15GB usage (so I thought i might need another 4080 super)
I was on Davinci Resolve 19.0 at the time. Yes there was a few crashes and stutters, but overall better performance than my 1080ti's combined.

Things were going well until I got really annoyed with the screen real estate. (35" wide monitor and still complaining). So I whipped out my old setup from the garage (another Asus 34" wide screen monitor) and hooked it back up.

Point 3:
For some reason decided to upgrade Davinci Resolve 19.1.2 as I felt that 1x 4080 super was just managing on my old Intel i9 7980XE system which crashed or slowed down a couple of times since the GPU upgrade. However, it was overall better performing.

Now here's the issue. I started switching to Dual monitor setup on Davinci. It was choppy as, like every millisecond. It wasn't doing it before when I had the 1080ti's at the time (and also the earlier DR 18 had no issues).

Solution:
I turned off Dual Screen in workspaces. Dual Screen in default view and Full Screen Timeline does not play nice with 4080 super GPU. (Both Display Port Cables were plugged into the back of the 4080. Haven't tested with HDMI cable but I figured it would be the same)

The reason Kent plugging the 2nd monitor HDMI to the back of the motherboard works is because he's delegating the clean feed to the integrated graphic card on the CPU. In which it lets the main UI is on the 4080.

Oh well. I do hope this helps, we just have to wait for the next DR update to fix this, Nvidia driver update OR maybe I have to get another 4080 super together totalling 32GB VRAM and output the second monitor to the 4080 super (1 screen for each card).

That being said, although it is not recommended by many and proven by 1 youtuber, I'll plug in the old 1080ti to the motherboard paired with my 4080 super. Separate the screens to see if clean feed still stutters.

I just read on another thread that someone just disabled or uninstalled all the RGB or Monitor tools and that fixed the issue.

So......I closed Asus's GPUTWEAK III which was giving me overlays of gpu and cpu usage stats.

Now it runs smoothly with dual screen enabled, full screen timeline and video clean feed.

INTEL i9 7980XE 18 Core 2.6GHz overclocked to 4.5Ghz - Custom Loop water cool 360 x 2 rad push pull
96GB 3200MHz RAM
Asus 4080 Super 16GB
M.2's only and Sata SSD's
No Raid running as of yet (did before as scratch disk but had alot of headaches and crashes with DR)

Just one heads-up: VRAM doesn’t add up.

Here's an iphone recording of my editing setup to show visually what I'm seeing

https://www.dropbox.com/scl/fi/7g4n1ez2 ... nr609&dl=0

The top monitor is via Clean Feed.

You can see that the bottom playback is smooth, and you can see that the playback at the top has this sort of staccato choppy feel to it.

This only showed up in 19.1. 19 and Previous, same project and same hardware setup did not see this issue.