What is this?

[Paul_Gringo]

Sometimes it appears and disappears after a few seconds. We exclude the videocard and drivers.

[John T Smith]

>We exclude the videocard and drivers

How did you do that?

What is your video card and driver?

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter

Also check (copied link) https://www.tomshardware.com/reviews/gpu-hierarchy,4388.html
.
https://helpx.adobe.com/premiere-pro/kb/gpu-and-gpu-driver-requirements-for-premiere-pro.html
.
nVidia Driver Downloads https://www.nvidia.com/Download/index.aspx?lang=en-us
-for all Adobe programs use the STUDIO driver, not the GAMING driver
-To achieve the highest level of reliability, Studio Drivers undergo extensive
-testing against multi-app creator workflows and multiple revisions of the top
-creative applications from Adobe to Autodesk and beyond
.
If you have a laptop you MAY also need to check for a laptop specific nVidia driver
-SOME laptops require an approved driver from the laptop company, not nVidia
.
AMD/ATI Driver https://www.amd.com/en/support
.
Intel https://downloadcenter.intel.com/product/211969/Intel-HD-Graphics-Family
https://www.askwoody.com/newsletter/free-edition-working-with-the-intel-driver-support-assistant/

[Paul_Gringo]

I don't need to update anything. I noticed this problem a long time ago, and it disappears almost immediately. Something in the program needs to be changed, but what? The drivers are different, the Adobe versions are different.

[R Neil Haugen]

That is nearly always a GPU card or driver issue, so unless I know how you decided to exclude the GPU, it's useless to even suggest something.

[Paul_Gringo]

I have experience with a faulty video card. And the problem is only in Premiere, which means the problem is in the software. If the video card is faulty, artifacts will be present everywhere, even on the desktop. So we can rule out the video card and drivers. Any other options?

[R Neil Haugen]

I've been helping troubleshoot a long time in both Premiere and actually in Resolve also. I've seen this image before, and it was always a driver issue. So that is all I can advise, I've never seen this not be a driver issue. And whether it happens in one app or all seems to be immateriel ... it is fixed with driver changes. Either updating, going to Studio from gaming (if Nvidia card), or at times even going back a driver or two.

Each to our own devices, of course.

[Paul_Gringo]

I'll wait for the new version of the drivers, and if the problem reappears, I'll write again