I'm running photoshop CC on a 5 year old mac with plenty of available ram. For the last few days, it has slowed to the point of being unusable. I thought it might have been caused by some brushes I downloaded, but after removing them, it is still really slow. I'm new to this program, so I'm not sure what i could have done to slow it like that. Any ideas on what I can check?
Please read these and see if one of the techniques mentioned helps: