Photoshop and Illustrator CC 2020 constantly crashing

I'm on a 15-inch 2018 MacBook Pro operating Mac OS Mojave 10.14.6.

I've been having an ongoing issue with both Photoshop and Illustrator CC 2020 where they freeze at the simplest of tasks (such as saving, zooming in and out etc), and the only thing I can do is force quit.

Once I've done that, the software refuses to restart - the icon just bounces up and down in the dock for eternity.

The only way I can restart it, is by first shutting down the MacBook Pro. However, after this error, that has trouble shutting down - it gets as far as the black screen and I have to forcibly hold down the power button to restart the computer.

Once it's back up, Photoshop restarts but I know that it won't be too long before I have to go through the whole process again. I'm normally encountering it at least once daily.

I've already tried reinstalling the whole of Creative Cloud and used the CC Cleaner tool, but it clearly didn't help.

Any help would be gratefully recieved. I previously posted this and it was marked as 'spam' - please do not mark as such this time, as it is not!!