Poor resolve 16 performance after Monitor 4k card install

I'm running released v. 16 studio on a i7700k, 64 GB Ram, Samsung 1 TB 970evo, Radeon RX-580/8 Win10 Pro desktop.

All was well until I installed Blackmagic Desktop Video Software, hoping to use a 4K TV for a third display. A second computer monitor was connected to the motherboard, served by the Intel graphics. My primary computer display is a 4k TV on the RX-580. I tried installing the DeckLink Mini Monitor 4k card and had booting problems, so removed it and tried installing its software first.

After Desktop Video install, Playback in Resolve slows down, jumps, and loses sync with the audio. It seems like it disabled the Open-GL computing power of my i7700K's graphics unit. Even if I disable video in the timeline, audio still judders! Optimizing the video for editing makes no difference. CPU use remains low during playback, until optimization takes place. Why the stuttering when CPU use is low and I have a fast PCIe SSD?

I uninstalled the Desktop Video software and my motherboard connected screen still doesn't work. I tried installing the intel drivers again, and it failed, claiming my system wasn't supported (???).

I want my system back the way it was (even without optimizing media)! Resolve was running great then to work on p4k 4kp30 braw video.

EDIT: Windows braw player always crashed immediately when trying to open a file prior to the problems, but now it works!

Any suggestions on fixing the damage done by the BM Desktop Video software? Do I even want to try to use the mini monitor 4k card or Intensity Pro 4k?

I think you need to disable the internal graphics card in the bios and use just the RX ports.

I think you need to disable the internal graphics card in the bios and use just the RX ports.

Yeah, that made no difference. Audio is still choppy making editing a piano sonata very difficult.

Try to install older driver for blackmagic desktop video.

[Peter Chamberlain]

Only one GPU can have the ui monitors connected.
Try reconnection and disable the internal GPU.

Only one GPU can have the ui monitors connected.
Try reconnection and disable the internal GPU.

Not sure what you mean. I have tried to return my computer to its former state with no BM monitor card and the latest Desktop Video software uninstalled. However, I don't have my Intel graphics working now, and it is now disabled in the BIOS. When I had motherboard graphics before along with the rx-580, all was well with Resolve performance on one screen. Now with just the RX-580, audio is awful.

Since I have no SDI and the Decklink Mini Monitor 4k does not support 4kp60 from its HDMI 2.0 port, I plan to return it and install Intenisty Pro 4k since it has useful inputs for little more money. I could install that card and the Desktop Video software if you suggest that could help.

Has no one ever had this issue before?

UPDATE: I installed 16.1beta1 Audio still dropping and poor on the edit pane, but plays fine in the cut and fairlight panes! I was hoping I would get the set-up screen when first starting 16.1 so it might reconfigure for my system, but no, it just started right up.

Perhaps this is to get people using the new cut pane?

I installed 16.1 Beta 2 which claims it "improves playback performance on the media, cut and edit pages."

and indeed it does! The color page still plays back as poorly, but I'm happy that playback is good enough on the edit page now to edit my classical piano recordings.

On my Windows machine, i7700k cpu is up around 85% use, Radeon RX-580 10% for playback, but I get clear video and mostly 30fps.

Thanks Blackmagic!

Hi

Intel Core i7-7700K Processor

PCI Express Configurations ‡ Up to 1x16, 2x8, 1x8+2x4

Max # of PCI Express Lanes 16

Your graphic card run with x16 pci lanes and a Intensity Pro 4k run with x4 pci lanes- that is x20 pci lanes and you only got x16 pci lanes - when you install a Intensity Pro 4K - you graphic card will only have x8 pci lanes !

Resolve 16.1 beta 3 still could perform better on playback.

While playing back, my i7700k CPU is about 85% busy and my Radeon 580 is 7% busy.
BTW, that is without a BM video card installed, or any others besides the graphics card.

When I disable my minor image corrections, playback speed improves but it still can't play 4k30p without dropping display frames despite CPU use dropping to about 40% use, GPU remaining at 7%

The one complicated color processing I'm doing is dehaze, but it doesn't seem to be done via GPU.

When I don't display scopes, it makes no improvement on playback in the color pane.

I'll keep repeating this until my last breath or moderators make a sticky :

If you're looking at the Windows task managers GPU usage, it doesn't tell the whole story. Look at Compute graph! Or monitor GPU activity in another software like GPU-Z or HW info.

Hi

Intel Core i7-7700K Processor

PCI Express Configurations ‡ Up to 1x16, 2x8, 1x8+2x4

Max # of PCI Express Lanes 16

Your graphic card run with x16 pci lanes and a Intensity Pro 4k run with x4 pci lanes- that is x20 pci lanes and you only got x16 pci lanes - when you install a Intensity Pro 4K - you graphic card will only have x8 pci lanes !

Transcode or get a more powerfull cpu with more cores and pcie lanes !

The performance problems I'm having is with NO INTENSITY PRO 4K CARD INSTALLED. No cards at all installed, so PCIe is only being used by my PCIe SSD, and controller for SATA III and USB channels.

I am planning to build a new machine with Ryzen 3900X, if they are ever in stock again! My current machine is from before I got a P4k or did any video editing.

Given how much faster Final Cut Pro X is compared to both Resolve and Premiere, there is still much room for improvement. It's been many years since I used a profiler like VTune, but if Blackmagic needs some assistance, I can dust off my knowledge and lend them a hand.

I'll keep repeating this until my last breath or moderators make a sticky :

If you're looking at the Windows task managers GPU usage, it doesn't tell the whole story. Look at Compute graph! Or monitor GPU activity in another software like GPU-Z or HW info.

Thanks, I installed HWinfo and indeed see very high GPU usage until I turn off color grades. CPU use also drops to 33%, but I still get occasional dropped frames in the color pane. At least now I can see benefit from a faster graphics card, and/or having my CPU's OpenGL driver back which BM video software seems to have removed.

I see about 110 MB/sec. disk reads from my Samsung 970 evo (8% bandwidth usage) which is puzzling given only 18 of 64 GB of RAM is in use (27 GB is available but likely used for disk cache). My 8 minute video file is 15 GB, so should all fit in RAM. Only other media are .WAV audio files, an 8 minute one and a 2 second one.

I see about 110 MB/sec. disk reads from my Samsung 970 evo (8% bandwidth usage) which is puzzling given only 18 of 64 GB of RAM is in use (27 GB is available but likely used for disk cache). My 8 minute video file is 15 GB, so should all fit in RAM.

Why would it cache your entire video file in RAM, when it can read it in real time from the storage? This is not a scalable approach, on a 20 minute reel of a feature you will have WAY more media than you can fit in RAM.

Yes, of course Resolve reading it all into memory would be a strategy for smaller projects, but I'm somewhat disappointed Windows did not cache all the files in memory as it should. I fear Resolve uses a generic approach to processing rather than ones tailored to each operating system. Final Cut Pro is able to have the best performance by only optimizing for Mac. Sure, it's not easy to optimize for CPU, Cuda, OpenGL, and metal, and again for Mac, Windows, and Linux, but performance matters, especially moving to 6k and 8k raw.

Again, why would Windows cache that in memory? It will not eliminate bottlenecks caused by CPU (usually decoding) or GPU operations. Resolve is perfectly capable of working with 6K/8K media, and even 8K timelines. The fact that performance is equal across three different operating systems with three different GPU interfaces speaks volumes to the quality of the software.

Yes, of course Resolve reading it all into memory would be a strategy for smaller projects, but I'm somewhat disappointed Windows did not cache all the files in memory as it should. I fear Resolve uses a generic approach to processing rather than ones tailored to each operating system. Final Cut Pro is able to have the best performance by only optimizing for Mac. Sure, it's not easy to optimize for CPU, Cuda, OpenGL, and metal, and again for Mac, Windows, and Linux, but performance matters, especially moving to 6k and 8k raw.

There are applications that allow you to create vitual HDD in RAM. You can try and see the results and bottlenecks

Yes, of course Resolve reading it all into memory would be a strategy for smaller projects, but I'm somewhat disappointed Windows did not cache all the files in memory as it should. I fear Resolve uses a generic approach to processing rather than ones tailored to each operating system. Final Cut Pro is able to have the best performance by only optimizing for Mac. Sure, it's not easy to optimize for CPU, Cuda, OpenGL, and metal, and again for Mac, Windows, and Linux, but performance matters, especially moving to 6k and 8k raw.

There are applications that allow you to create vitual HDD in RAM. You can try and see the results and bottlenecks

I had considered doing that for Resolve's working (scratch) files.