Sure you followed my advice? Dualcore doubles you speed if you haven't enabled it already. If you're using 2 monitors disable the second one. Kill unnecessary programs such as explorer.exe (There is a thread for how to do that conveniently)
Specs: intel i5 3570k @ 3.4GHz;
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
