Game Lag A6 3500 with HD 6850 Toxic

Hello Good Day,

I don't know why the game lag (Inversion and Torchlight 2) when I set the settings to HIGH including AA.

I can run Crysis 2, Spec Ops the line, MW3, and BF3 without lag.

I don't know what is the problem. Can anyone help me with this problem? Thanks.

Specs:

MOBO: ASUS F1A55 M-LX PLUS
PROCI: AMD A6 3500
CPU COOLER: CM HYPER 212 EVO
RAM: KINGSTON HYPER X GENESIS 1X4GB
PSU: CM EXTREME 2 525W
GPU: SAPPHIRE HD 6850 TOXIC