Photoshop glitching on Mac Pro Sierra 10.12.4?

[iArsky]

Hey everyone,

We have 2 of these Mac pro's at work, on which we use Photoshop daily. Lately we have had some photoshop glitches with the latest photoshop update:

• When sometimes zooming the image which you are editing might turn darker or extremely overexposed.
• If you have masks in any of your adjustment layers, they might appear incorrectly as if photoshop has been cutting them on its own until you tap on the glitched area once in the mask view and it disappears. ​IMAGES HERE
• Generally photoshop has been slow on macs lately, so my question is not really to look for a solution but to verify if this is a hardware or software side problem.

I would appreciate any replies regarding this Thanks a lot!

[c.pfaffenbichler · Accepted solution]

Does turning off »Use Graphics Processor« in the Performance Preferences (Photoshop > Preferences > Performance > Graphic Processor Settings) and restarting Photoshop have any bearing on issues 1 and/or 2?