When I play games after 5-30 minutes of play I get terrible FPS drop. The cpu gets overloaded with hardware interrupts and continue to do so even after I quit game and the system stays idle. So something happens during the game that kind of locks 1 out of my double core CPU. The furthest I was able to track this problem is to see in LatencyMonitor that the responsible process? is ACPI.sys. I have read that it could be either a driver or a hardware problem. But I am not able to understand which driver or which hardware and ACPI refers to a whole bunch of things. I updated all drivers on my PC, tried to switch off devices in device manager, but with no luck. The only think that helps to temporarily unload cpu (stop hardware interrupts) is when I uninstall and reinstall ACPIATK driver (not sure what that is) or Intell Device Management Interface driver from Asus site, with subsequent reboot of the system.
The problem does only occure when playing games. This is not likely to be a heat problem as CPU temperatures never exceed 75 degrees or GPU is never higher than 65.
I have a newly bought Asus n43sn with the following specs:
Nvidia geforce gt550m graphics card
4 gb of ram
Windows 7 x64 OC
I know people have similar problems on other machines, but there does not seem to be a single cause of the problem, and nothing I have tried helped me. With a similar Asus notebook I have not seen people suffer the same problem or perhaps they suffer alone? Perhaps after my post I can find a company ?
Would highly appreciate any help or advice!!!
Edited by Andreyash, 13 October 2011 - 11:28 AM.