I just updated to PS 2021 and there is something seriously wrong with basic navigation. Zoooming and moving artwork leads to a strange and wild flickering. Literally the piece will start zooming in and out wildly regardless if the tool is engaged from the toolbar or via the Navigator. At the same time I lose all the definiton in any line work. The lines start switching between choppy and smooth as I scroll. There is also a huge amount of lag with general scrolling. I do mostly illustration and digital painting so this odd behavior makes the new version of PS unusable for me.
Playing with the Graphics Processor settings in the Performance tab made no difference. I made NO changes in any settings during or after the update.
Any suggestions would be appreciated
I've attached a PDF of my system info. I updated my video card driver and my Wacom drivers and that didn't help. Windows 10 did update yesterday.
I think you're on to something, but there might be something else to add... To try your tip, I had to enable the graphics processor ( Preferences->Performance). I had the GP disabled because in the past it didn't matter if the box was ticked or not. The aoom was still broken. BUT to adjust the VRAM in the 3D tab I had to enable Open GL and to do that required enabling the Graphics Processor ( GP).
On a whim I tried the zoom after turning on the GP and it worked. Even with the VRAM at 100% in the 3D tab. I used the default GP settings ( attached photo). By the way, I also had a scratch disk set up so that didn't need to be done.
Before, it made NO difference if the GP was enabled or not. So Adobe must have fixed something " under the hood" after all. Still. I'm not abandoning PS 202 just yet!