When I zoom in using my touchpad or my drawing tablet there is a huge delay in Photoshop. It still performs the action, but very very slowly. It also zooms in/out further then what I gave input to, I can best describe it as 'slipping'. The rest of Photoshop, or my macbook in general, works as it should. I've tried to re-instal it and go over the settings but it didn't help.