iMac Retina Window Dragging Issue

not sure if else has run this. returned first imac 5k (4ghz/295x) because of issue, replacement same thing. apple phone support has never heard of issue.

when moving windows around screen, drawing best described "tearing" contents of window trail window few milliseconds. additionally window contents seem have corruption in drawing while moving (the window gets broken blocks move around). corrects once window stops moving.

rebooting clears returns. first imac came within minutes. replacement ran 12 hours before doing again. app running chrome 15 tabs open or so. running latest osx patches, etc.

hard believe it's hardware issue (originally looked bad vram me). else see this?

 

abenamou said: ↑

not sure if else has run this. returned first imac 5k (4ghz/295x) because of issue, replacement same thing. apple phone support has never heard of issue.

when moving windows around screen, drawing best described "tearing" contents of window trail window few milliseconds. additionally window contents seem have corruption in drawing while moving (the window gets broken blocks move around). corrects once window stops moving.

rebooting clears returns. first imac came within minutes. replacement ran 12 hours before doing again. app running chrome 15 tabs open or so. running latest osx patches, etc.

hard believe it's hardware issue (originally looked bad vram me). else see this?

click expand...

never heard of happening, either. can post video of happening?

 

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