Temporary grids appearing on images in Photoshop and InDesign CC

[gabrielas96298599]

As I try to edit images, I get this awful grid pixel stuff all over (see it here at left and right edges near top). It comes and goes as I move around, but it's been happening in both Photoshop and when I scroll and zoom in InDesign. What is happening? How can I make this stop? Thanks for your help.

[kglad]

[ moved from Adobe Creative Cloud to Photoshop General Discussion]

[Norman Sanders · Accepted solution]

In Preferences > Performance, uncheck Use Graphics Processor and restart Photoshop. Does the "awful grid stuff" disappear?

[gabrielas96298599]

thanks