Photoshop lagging to all hell >.<

[Flow]

Hey Jonny! Probably trying different cache preferences could do the trick, I had a week of terrible lags with Photoshop just a few weeks back. And after I almost gave up I tried out to adjust the different cache settings and it worked! It was not my graphics card after all :) Hope it does the trick for you, too! Oh and restart PS every time you change something related to hardware settings!