Photoshop freezes when zooming and dragging canvas - iMac 2013 MAJOR ISSUE!

I have an issue where my canvas freezes when I zoom in or drag the canvas, and it remains stuck on the screen. I can move the canvas normally but I cant move anything or interact. No layers, no tools or buttons do anything.

Mac user, late 2013 model. Im updated to the latest versions and such. 

Ive posted already here about it on a similar thread with the same issue but im fed up now. Had the problem for a while. The other day I was trying to cut out an image (very small file) and every minute or so it freezes so I have to reopen the file. So file size doesnt effect it. Zooming, moving and dragging the screen around seems to make it happen and on a frequent basis.

Ive already been advised to turn off the graphics card which isn't a cure as it still happens after this and this should never be a cure as its horrible to work in with it deactivated. I have also been advised to turn Legacy Compositing on or off which was turned off so I tried turning it on and closed and reopended PS. I then get a ghost version of whatever I move left in its place. So if I move a box for example there is a duplicate box still in the origional place but I cant delete it or move as if it where a ghost image of the origional. So this is not the answer.

I have friends with the same issue and also read other posts and complaints about it so its wide spread. Whats going on?