Getting jerky backgrounds on Win7 on iMac 27'' 2560x1440

Posted by JohnIdol on Super User See other posts from Super User or by JohnIdol
Published on 2010-05-17T22:05:26Z Indexed on 2010/05/17 22:11 UTC
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windows-7

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colors

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imac

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graphics

I installed Win7 on bootcamp on my new iMac 27'' (ATI videocard) and everything was good until recently I noticed that the default win7 background (then one on the background on login) looked jerky.

When I say jerky I mean the kind of jerky you get if you can't display enough colours, and instead of nice fading shades you just get stripes and jerky patterns. I am on native resolution but even if I go down to 1920x1080 I get the same.

This might have happened after a firmware update but as I don't use windows very often I am not too sure it's what caused it.

Oh, and when I am playing games everything looks OK (as in not jerky!).

Any help appreciated!

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