FPS fluctuations

[k4p84]

roll back drivers to the last known stable ones and see if that improves things

 

[jmartis]

I have evidence this is related to CPU throttling. I disabled an option related to CPU power savings in BIOS so the CPU core frequency stays at max all the time. I've since played a long time, tried a restart and no framerate drops anymore.

The only downside is that the CPU runs slightly hotter (43 vs. 41C) at idle.

 

[k4p84]

.

hmm, i wouldnt have expected stepping to have kicked in during gaming, in fact thats down right stupid. That would cause no end of problems.

go find an overclocking guide for your MB and turn off all these sorts of features

ED