what is ur graphics card. and who ever told u Temporal aa was opimized for LCD lied to u. Temp AA turns on Vsyc which why it locks ur fps at ur refresh rate, it does Aa with every frame, if ur card can stay over the refresh rate it will stay like 75fps if ur refresh rate is 75, if it cant then ur fps will take a drop.
i would suggest you use normal aa. Also try turning off mouse Smoothing.
i would suggest you use normal aa. Also try turning off mouse Smoothing.