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