I am seeing strange screen flashes when I open up Photoshop and when I Save As. Here is an example:
Resetting preferences did not help unfortunately. I see this flashing effect only in Photoshop...not for example, in Corel Painter. I don't think it's a driver effect.
The effect ioccurs when I first open Photoshop and when I do a Save As. It is only visible for just a moment and the effect is too quick for me to easily make a screenshot.
The effect is like a very simplified version of the workspace and some palettes being seen in large blocked areas of black and white. The 'Open' flashed effect is the whole workspace white, with just my Brushes palette being in black on the right of the screen. The black and white pattern seems to have the opposite tone to that on my workspace and palettes. Like a sort of negative.
It's strange. I don't want to have to reinstall Photoshop unless I have to - meaning I want to know that a reinstall will fix the problem.
I have the latest PS with updates and W10 Pro with updates. I am using a Dell XPS 17 with 64gb of ram, an Intel Core i7-10750H, 4700 MHz (47 x 100), integrated Intel gpu and a GTX 1650 Ti/PCIe/SSE2 gpu which is being used by PS. The laptop is working fine in other respects.
Any ideas please?
1 Correct answer
Yes, one more. First you want to turn off automatic updates in your Creative Cloud Desktop app.
You can uninstall, remembering to keep your settings instead of deleting them and try an earlier version. Think when was the last time all was well, and try an earlier version that did not cause problems. Save your workspaces so you can return to them. If rolling back the 21 version makes you nervous, install v 20 and see if that works. I always keep an extra version when an update proves to be buggy
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It does sound like a Graphics Processor problem.
Start by going into Preferences > Performance and see if checking or unchecking Legacy Compositing helps. Restart Photoshop to see if it works.
You can uncheck "Use Graphics Processor" as a basic trubleshooting method. If you do that, does the problem go away?
If so, look at your Advanced Graphic Processor settings and see if tamping them down puts less stress on the GPU.
Example screenshot:
 
Just taken a clearer example of the opening screen flash:
This problem seems to be confined to Photoshop. What next?
...and finally, a better example of the Save As flash screen (files blurred out by me) -
Yes, one more. First you want to turn off automatic updates in your Creative Cloud Desktop app.
You can uninstall, remembering to keep your settings instead of deleting them and try an earlier version. Think when was the last time all was well, and try an earlier version that did not cause problems. Save your workspaces so you can return to them. If rolling back the 21 version makes you nervous, install v 20 and see if that works. I always keep an extra version when an update proves to be buggy in my case.
Thank you very much for pursuing this. Here are screengrabs of the relevant Nvidia Control Panel settings. Nvidia is already selected for Photoshop (and sniffer.exe) too, and auto for the general assignment of gpu. I bear in mind that it is only Photoshop - not for eg, Corel Painter - that demonstrates this flashing. Painter behaves well with no strange effects.
You might try disabling Adobe Camera Raw GPU acceleration before you try this:
In the GPU Troubleshooting guide, have you tried disabling the Intel GPU as instructed?
You can restore it, but since assigning the High Performance card did not help, let's see if this works.
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