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Portrait orientation (90 degree rotation) monitor causing CPU lag!


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#1 tooga987

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Posted 04 August 2015 - 03:44 PM

Hi

I have a desktop with two 24" monitors hooked in.  I had been using both monitor in landscape (normal) orientation for several months with no problems.  Yesterday I rearranged my desk and now my 2nd monitor is in portrait mode, that is to say it is rotated 90 degrees so it is now more vertical.

I noticed my computer running slowly, and suspecting yesterday's change, I compared CPU usage between before and now.  With my old set-up, my CPU usage is around 8%.  As soon as I set the display settings rotated 90-degrees for that monitor, it idles at around 40% !!

Any idea what the reason for this and if there is any solution?  Thanks



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#2 gigawert

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Posted 04 August 2015 - 03:52 PM

Maybe the CPU has to rotate every single pixel AND update them so it takes a toll on your system. (Just a guess)


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#3 tooga987

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Posted 05 August 2015 - 11:11 AM

It would seem something like this to be the case.  I have to assume it's not the monitor's fault, otherwise there would be no reason for it to even have this capability.  So does this mean my GPU is just lousy?  Or can I change some setting to make it render the screen differently?






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