Bizarre issue of disabling windows visual effects causing low fps

Hello.

Recently, I've had issues where any kind of overlay, especially transparent ones causing low fps.
I managed to narrow the issue to the visual effects on Windows 7, but here is where it gets bizarre.

DISABLING visual effects results in the fps problems, whereas enabling them will do the opposite.
While I have not narrowed down which exact visual effect is causing this, I will update as I explore them.

Any ideas?
Windows 7 64 bit, AMD 7850(? forgot if 50 07 70), Intel i5 2500k.

I also happened to update my graphics drivers very recently to the official 14.4 drivers. I believe it is after updating the drivers that this happened. Not sure if it is a culprit, but just wanted to add.

EDIT: the option called "Use visual styles on windows and buttons" is the culprit that causes the slowdown if DISABLED. In other words, having the classic win98 look by disabling the windows 7 theme is causing the massive slowdown. Any idea why? corrupted windows files perhaps?
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  1. So if I read you right, by having the Windows 7 desktop set normally, you experience no issues? Then why not jut leave it looking as it normally does?

    To answer your question, I suspect your drivers are in some way optimised for 'normal' Windows... but if you're really concerned, can you roll back to the graphics drivers you were using previously?
  2. snowctrl said:
    So if I read you right, by having the Windows 7 desktop set normally, you experience no issues? Then why not jut leave it looking as it normally does?

    To answer your question, I suspect your drivers are in some way optimised for 'normal' Windows... but if you're really concerned, can you roll back to the graphics drivers you were using previously?


    The issue was that this was never a problem in the past and suddenly appeared seemingly out of nowhere.
    Moreover, I much prefer the win98 theme over the default one.
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