Sudden lower WINSAT score than usual on 7450m aero graphic

[paddy_mcholey]

HP Pavilion g4-1318tx

WIndows 7 64 bit

Switchable mode set to fixed, on high performance

The case:

By default, my first score would be 5.3 on AMD, 4.6 on intel HD

One day, my system turned aero off, feels very sluggish, checking at task manager, there running winsat in the background by itself

I wait for them to complete, by then my amd's aero score goes down to 3.3. intel's still at 4.6.

From that point, my high-performance mode feels inferior compared to power saving mode

Any changes made to your system before the issue occurred:

upgrading BIOS from F62 to F63

Have been reinstall HP default driver for AMD, downgrading BIOS back to F62, problem still there.

Any clue for what happen here?

Trying the driver offered here (the blogspot one):

http://h30434.www3.hp.com/t5/Notebook-Display-and-Video/GUIDE-Update-AMD-Mobility-Radeon-drivers-to-...

a good shout, my score goes up to 5.1, a little low compared to the previous 5.3 but a nice temporary solution i guess.