Choppy playback only in timeline - 19.1.2

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

That is good to know. But how is I've seen others use 2 GPU's together and things run alot more smoothly and export times are much faster in the past.

I also tried removing my second 1080ti from the setup and it didn't run as good. It would be really good to know if a 2nd GPU is beneficial. Save me another $1840AUD for another 4080 super if I don't need it!

Back onto Kent's topic:

My setup now runs properly on dual screen no matter the settings. I closed GPU Tweak. Also ran into another issue after when I downloaded ACEs DJI IDT and ODT's, installed it into the folders and Davinci crashed wouldn't open no matter how many times I restarted the pc. Deleted it and Davinci worked normal again. If it again broken don't fix it

Playback runs smooth again. Kent do you have Asus GPU Tweak III or any monitoring programs running? If you have the time start isolating the problem bit by bit. I did that last time to get things running properly and had like 3 or 4 issues combined that caused various crashes and shutdowns.

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.

Looking at your setup and pc specs, NNVIDA A6000! Yes it shouldn't do that. But I assume the clean feed HDMI Intel® UHD Graphics 770 might have driver issues.

Would you have time to test and redo the pc? Might even possibly take 10+ hrs to fully find the problem.

Previously been using Asus Strix 1080ti x 2 (giving me 22GB VRAM total).

I was referring to this notion only.
Two cards may still give you more performance, but they should be identical and both sit in fast enough slots.

Previously been using Asus Strix 1080ti x 2 (giving me 22GB VRAM total).

I was referring to this notion only.
Two cards may still give you more performance, but they should be identical and both sit in fast enough slots.

No problems! Yes they were both sitting on the x16 slots. My cpu is a 44 PCIE Lane and with 4 PCIE 3.0 x16 Slots.

I'm sure if I later on upgrade to another motherboard (hopefully a work station that gives me all x16 slots) the 4080 Super will perform even better.

Side note I'm not having choppy play back still. (I've been editing stuck to the PC up until now). 35 more videos to go. Just for a 3pm deadline (5am now). We love what we do!

Update: I swapped out the GPU (same model) and it did not fix the problem.

I'm experiencing the same issue. I had considered upgrading my GPU, but without knowing whether it would actually solve the problem, I was hesitant to "throw parts" at it. Especially if when the 'parts' are $1500-2500.

Like you and others, everything was fine until I upgraded to version 19.1.2. I'm using an RTX 2060, which has been sufficient for my needs up until now. My lower-power GPU might be contributing to the issue. The choppiness eventually worsens to the point where DaVinci Resolve slows to a halt and eventually crashes. If I catch the problem early enough, I can usually close the app normally and relaunch it, which improves things temporarily. Problem is, the behavior's inconsistent.

I’m considering downgrading after I finish my current project. I’d prefer not to switch versions mid-project if I can avoid it.

DR Studio 19.1.2
AMD 3950
Win 100 Pro
64 GB RAM
RTX 2060 Super

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.

Looking at your setup and pc specs, NNVIDA A6000! Yes it shouldn't do that. But I assume the clean feed HDMI Intel® UHD Graphics 770 might have driver issues.

Would you have time to test and redo the pc? Might even possibly take 10+ hrs to fully find the problem.

I'm not using any kind of integrated graphics. All monitors are fed from the A6000 via DisplayPort

Update: I swapped out the GPU (same model) and it did not fix the problem.

I'm experiencing the same issue. I had considered upgrading my GPU, but without knowing whether it would actually solve the problem, I was hesitant to "throw parts" at it. Especially if when the 'parts' are $1500-2500.

Like you and others, everything was fine until I upgraded to version 19.1.2. I'm using an RTX 2060, which has been sufficient for my needs up until now. My lower-power GPU might be contributing to the issue. The choppiness eventually worsens to the point where DaVinci Resolve slows to a halt and eventually crashes. If I catch the problem early enough, I can usually close the app normally and relaunch it, which improves things temporarily. Problem is, the behavior's inconsistent.

I’m considering downgrading after I finish my current project. I’d prefer not to switch versions mid-project if I can avoid it.

DR Studio 19.1.2
AMD 3950
Win 100 Pro
64 GB RAM
RTX 2060 Super

Sorry for the late reply! Just want to see if anyone is using any GPU accelerated software? Eg Asus GPUTweak or MSI afterburner equivalent?

I've recently updated to the Asus 4080 Super Proart and had installed GPUTweak III with it. I had issues with second monitor Video Clean Feed when I had GPUTweak. When I closed it the lag went away.

Also I just overclocked from 4.2GHz to 4.5GHz. Not sure if that's doing anything or if it will relate.

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.

Looking at your setup and pc specs, NNVIDA A6000! Yes it shouldn't do that. But I assume the clean feed HDMI Intel® UHD Graphics 770 might have driver issues.

Would you have time to test and redo the pc? Might even possibly take 10+ hrs to fully find the problem.

I'm not using any kind of integrated graphics. All monitors are fed from the A6000 via DisplayPort

Probably have to try and isolate the issue. Let's say with DR 18, would it still be an issue on your PC? Try downgrading to that version and see if the lag is still there. This way we can isolate if it's Software or Hardware related.

Sorry for the late reply! Just want to see if anyone is using any GPU accelerated software? Eg Asus GPUTweak or MSI afterburner equivalent?

I've recently updated to the Asus 4080 Super Proart and had installed GPUTweak III with it. I had issues with second monitor Video Clean Feed when I had GPUTweak. When I closed it the lag went away.

Also I just overclocked from 4.2GHz to 4.5GHz. Not sure if that's doing anything or if it will relate.

I'm not using any overclocking or acceleration. I still can only get smooth playback when taking the clean feed from the motherboard...which is not ideal.

I am having the same problem. When I apply DEHANCER to a clip the playback is super choppy.This is my firstime using dehancer so I have no idea where to start or what to do.. please help... Oh and by the way according to the documentation my computer should be strong enough to handle this plug in.. HELP PLEASE

Something in the Nvidia driver is what is doing it.

Everything was working fine, somewhere along the line an Nvidia driver update, or a Resolve update or both don't play nice anymore in several ways.

I've only been able to solve for my needs with a Decklink card.

[Peter Chamberlain]

Something in the Nvidia driver is what is doing it.

Everything was working fine, somewhere along the line an Nvidia driver update, or a Resolve update or both don't play nice anymore in several ways.

I've only been able to solve for my needs with a Decklink card.

Unfortunately Windows updated often change the GPU driver, or its ability to be used to the full extent without notification. Once you find one that works, note those details so you can reload it when its messed up again.

Experiencing the same issue with a 4090. I feel like this has been happening since I moved to 19.1.2 from 18.6 or after that rather troublesome windows update.

Update: Feeding the workspace clean feed monitor via motherboard stops choppiness. Which I would say is rather odd.

Same here. Had nothing to do with a Windows Update. It was Resolve 19.1. Version 19 did not have the issue.

I did not read all the comments. Had choppy playback that was driving me crazy for the past month with 18.5 and now with 19. In all tabs of Resolve it could not play smooth, appeared to be dropping frames, but showed full FPS. Rendered files played smoothly. Decided I might as well try a new Display Port cable... Problem solved. Don't know how the cable worked well enough to play rendered files but not well enough to play smoothly in DR??

Edit 5 minutes later!- After using a new cable it worked great..literally 5 minutes later it went right back to stutter choppy playback. Obviously I have no idea what that means. It is not just V19 for me..this was happening back in 18.5. Must be some hardware issue??

Long Story short...As others have mentioned, the only way to get smooth playback without visible dropped frames is by taking your clean feed from the motherboard rather than the GPU.

I did this but it was causing Resolve to crash CONSTANTLY when color grading. I have been forced to switch my feed back to the GPU, so basically I have to choose between a terrible editing experience or a terrible grading experience.

I'm hopeful this will be fixed soon, otherwise I don't see how we can continue working in Resolve. I'm begging you Blackmagic to fix this.

I also have seen exactly the same issue (with an ASUS Pro Art RTX4070 Super)
I originally thought it was an issue with my calibrated monitor, as it only appeared to happen on the Full screen clean feed view where the preview monitor looked smooth, but it seems that it can happen in either monitor.

What I have noticed (that I have not seen anyone comment on) is that playing a section of video can be smooth one minute, then go back and play the same section again and it will stutter then play again and it will be smooth for a bit then stutter again.

Additionally I have also noticed that I don't actually think that it's necessarily Resolve related, as playing a rendered video in Windows Media Player will also sometimes show the same issue... e.g. sometimes it will look smooth and other times it will stutter in the way described.

I also tried an experiment with the Windows Media player where I had half the video playing split across both monitors so some on one screen and the other half on the other.
I actually had it so that one side was stuttering and the other was buttery smooth..
You can see this happening here using Windows Media Player

https://photos.app.goo.gl/bBz44DbgF9hfwTXP7 (copy and paste this as I can't put a linked URL)

(stuttering on the left monitor smooth on the right)

I'm inclined to put this firmly in the Windows/NVIDIA driver camp.

I too wondered if this was just a GPU issue but the thing that keeps leading me back to Resolve is that I can play a clip shot at 59.94 FPS in a Resolve preview window and it plays perfectly. The same clip placed into a 23.976FPS timeline has visible dropped frames (stutters).

Also, the same footage plays perfectly in a 23.976 Premiere timeline, on the same computer using the same GPU. Something is breaking down between Resolve and the GPU. The motherboard's display port can play the same Resolve timeline just fine, it's only the feed from the GPU that stutters.

Agreed.

Still seeing weird stuff with the GPU on 19.1.4 and latest Nvidia driver 572.83.

In my case my Polylines in Fusion don't have vertices. Only the line itself. If I roll back to a 550 driver, points come back. Though I need to be on a 570 driver because of other apps I also use.

I too wondered if this was just a GPU issue but the thing that keeps leading me back to Resolve is that I can play a clip shot at 59.94 FPS in a Resolve preview window and it plays perfectly. The same clip placed into a 23.976FPS timeline has visible dropped frames (stutters).

Also, the same footage plays perfectly in a 23.976 Premiere timeline, on the same computer using the same GPU. Something is breaking down between Resolve and the GPU. The motherboard's display port can play the same Resolve timeline just fine, it's only the feed from the GPU that stutters.

I'm not saying there isn't also a Resolve issue with frame rate conversion. But this issue occurs when there is NO frame rate conversion. My video is 30fps played back in a 30fps timeline and exhibits this issue... (Sometimes not always but mostly) And the fact that it also happens just with WMP suggest a driver issue.

I'm giving this a bump because I still have this problem and it's making editing impossible. I'm wondering if anyone else is still having this issue?

I keep hoping updates will fix the issue but nope.