Recently installed Big Sur, it is causing hevic with Photoshop. It takes forever for a picture to open if it opens at all. Is there a way to switch back to Catalina or some other solution. I am so frustated.
Sounds like your computer might be underpowered for all the apps you're running. Low memory is a huge deficit. Big Sur alone requires at least 35.5 GB of empty HD space and 4 GB of free RAM. That's in addition to the cumulative requirements to run all your other apps and hardware.