linye_mi's profile

2 Messages

 • 

80 Points

Mon, Jun 29, 2020 5:19 PM

Photoshop 21.2 major glitch on large screen monitor

On my Dell 34 monitor the latest Photoshop 21.2 (Mac OS 10.15.5 Catalina) has a serious issue. It won't refresh screen if you make changes. The screen just go to dark grey as soon as you make changes in art boards. Then if you move the art board it'll go back to normal. This happens consistently when you have many art boards in one PSD file. Downgrading to 21.1.3 solved the issue completely.

Responses

976 Messages

 • 

12.1K Points

1 y ago

There is a very lengthy discussion about this with a workaround listed, that you would have found by using the Search box at the top of this page.... That search is the place to start; rarely does someone have a "new" issue that has not already been discussed and often resolved;.


The work around: Turn off legacy compositing .  Edit-Preferences- Performance uncheck the box on Legacy Compositing

2 Messages

 • 

80 Points

1 y ago

Thanks for replying - I have tried turning it on or off. It doesn't solve my issue. Also the entire performance of Photoshop has decreased significantly. Doing "select and mask" would literally putting my 2019 high end Macbook Pro to a stop. This is a very messy update failure. Reversing back to 21.1.3 solved everything. What am I missing from 21.2?

976 Messages

 • 

12.1K Points

1 y ago

Something else to check re this situation: there are several threads underway on which mention of a particular AMD Radeon video circuit, model is 5500M, has been complicit. 

Here is a quote from Adobe (I think) : 
"The AMD 5500M is not supported by Adobe and there is no clear answer as to whether or not they will make it compatible with their software. The only solution is to shut off the GPU in the Performance section of Preferences as well as in CAMERA RAW. ... Since you cannot use the GPU, your canvas will not live update.Jan 28, 2020"

That would be, as I interpret it, that  the new update has code that does not get along with the GPU or driver for it. Unfortunately, if that is the problem, and if your machine is a MACBook, it is likely not possible to remove and replace the GPU, but that is a question to ask Apple... On a regular MAC it should be possible to replace with a compatible card.

So, you need to determine exactly what is the GPU in your machine.