Hi,
I use Catalina and just downloaded the most recent Adobe Photoshop for design work.
I've been using this program for 15 years and have never experienced these incredibly frustrating problems.
When I try to zoom in 100% to a file that is 27x40 inches at 360 dpi, the image freezes. I then have to go back to Fit To Screen to unfreeze it. WTF.
The other problem is whenever I try to save, a window pops up saying it can't be saved due to an ERROR. Again, WTF.
I rely and have always relied on Photoshop for work. Any assistance is greatly appreciated.