OpenGL tools not working, driver updated.
I'm using Photoshop CC 2017 and have a GeForce GTX 970 graphics card. Up until a few days ago everything was working fine, including the rotate tool and the colour picker ring. Then suddenly I couldn't use those tools and apparently it 'only works with OpenGL enabled document windows'.

I have updated my graphics card drivers, updated my cintiq drivers (and then went back to previous versions to see if this was causing the problem, but it wasn't that I could tell), and uninstalled then reinstalled Photoshop itself.
Nothing seems to be fixing this problem, though occasionally I will start up my computer and the rotate tool etc. will work for a while before ceasing to function again.
As you can see, OpenCL is checked and Advanced Drawing Mode is still accessible:

Has anyone had similar problems and have found a workaround/knows how to fix this problem? It wouldn't bother me so much but line edges etc. are all jagged and nasty to work with...
