Im notice that my photoshop lagging so much after the update while maintaining the same preferences and I don't know how to explain what happen but when I open images it fills with dark grey rather than showing the photo that I open. Please see attach.
Crash or freeze, Mac, Performance, Problem or error
Sorry that image is getting disappeared while trying to crop in Photoshop 2020. It's really strange and is not definitely not a usual experience.
Are you facing this issue while working with a specific file? Also, which version of macOS are you running on your computer?
I'd suggest that you try the 2 steps below:
1. Go to the Photoshop preferences, performance tab, turn off the graphics processor option and see if that makes a difference.
2. Reset the app preferences for Photoshop. To restore preferences quickly:
Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start Photoshop. You are prompted to delete the current settings. The new preferences files are created the next time you start Photoshop.
Resetting the app preferences resolved this issue for me. I thought I was going mad - I couldn't crop any image at all without the entire image disappearing, and I was on a brand new Mac with superpowers!