HI ! I have THE SAME FPS problem on 2 different PCs. That 2 problem happened after i overclocked the CPU -> after 1 day after cpu ran overclocked i get BIG fps problem, from 40-50 fps in LoL ( league of legends ) with detail to VERY HIGH, now i get max 18 fps with VERY LOW , max 14 FPS with very high[that problem happen on the both PCs 1 day after CPU ran overclocked].
SO FIRST CPU SPECS
CPU : athlon 64 x2 4200 2.2 ghz TO 2.52 ghz with +0.025V
GPU : hd 2600XT pro
MEM : 2gb ddr2 667
PSU : 450 W delux
mobo : gigabyte m61p-s3
2ND CPU SPECS
CPU : e2140 1.6ghz to 1.96 GHz + 0.012V and pci-e clock to 110
GPU : 6800GS
MEM : 2gb ddr2 533
PSU : 450 W delux
mobo : biostar 945GC micro 775
SO FIRST CPU SPECS
CPU : athlon 64 x2 4200 2.2 ghz TO 2.52 ghz with +0.025V
GPU : hd 2600XT pro
MEM : 2gb ddr2 667
PSU : 450 W delux
mobo : gigabyte m61p-s3
2ND CPU SPECS
CPU : e2140 1.6ghz to 1.96 GHz + 0.012V and pci-e clock to 110
GPU : 6800GS
MEM : 2gb ddr2 533
PSU : 450 W delux
mobo : biostar 945GC micro 775