I have just upgraded to the new Photoshop CC 2017. Please help. Everything has slowed down to a snails pace! I have tried turning some of the performance stuff off in the preferences, restarted many times. Nothing is helping and I am on a tight design deadline. Unfortunately I am an individual design professional (I don't work for a big company with a big tech department that can help me! and I don't have time to trawl through hundreds of threads trying to work out how to improve my mac. Please can you help?
Have you tried Preferences > Performance > Advanced Settings under Graphics Processor settings and changing your drawing mode to basic or normal?
Also be sure and check out https://helpx.adobe.com/photoshop/kb/optimize-photoshop-cc-performance.html