Pixilated photos on screen when using Photoshop cc

[ellenpoortinga]

I recently got a brand new MacBook Pro - supposedly the best for editing pictures?!  Anyway. When I open photoshop cc ... and open a picture, any picture I open immediately has a few squares showing on the picture or pixilation issues.  If I zoom in on the photo.. the squares or pixilation cover most of the photo making it impossible to edit.  Its the same photoshop program I used on my old Mac and I never had these issues?

Any advice?

[c.pfaffenbichler]

Could you please post screenshots (including one taken at View > 100%) with the pertinent Panels (Layers, Channels, Options Bar, …) visible?

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

Are Photoshop and OS fully updated?

What have you done for trouble-shooting so far?

Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point:

https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html

[ellenpoortinga]

[c.pfaffenbichler]

Have you tested for GPU-issues yet?