I've been having the exact same problem, and every thread on the subject I come across, Adobe seem to think it's been fixed. Well, it hasn't!! I'm on Windows 10, all software and programs are up-to-date but the lag is making my life a misery! I did find that when I turned off Extensis Suitcase Fusion Auto-Activation it speeded things up, however I still have problems with screen redraw being very slow, and sometimes objects disappear altogether - I then have to zoom in or out to force a redraw. Adobe, will you please respond and let us know that something is being done!
I've been having the exact same problem, and every thread on the subject I come across, Adobe seem to think it's been fixed. Well, it hasn't!! I'm on Windows 10, all software and programs are up-to-date but the lag is making my life a misery! I did find that when I turned off Extensis Suitcase Fusion Auto-Activation it speeded things up, however I still have problems with screen redraw being very slow, and sometimes objects disappear altogether - I then have to zoom in or out to force a redraw. Adobe, will you please respond and let us know that something is being done!