what the hecks wrong with those latency timings?
Not a bad overclock to me that anyway
That frames per second isn't right by the way for your system, try turning off "vertical sync" if its set to on within the game
Basically it sets the video card to only send out frames when the monitor is ready for it (60hz means 60fps for example all the time) though it can also act as a bottle neck for a system making it run slower, so try turning this off to get faster speeds
Your computer itself is definetly not the problem though, I guarantee that.
This isn't the problem, though I'm jsut curious to know what temp yuor CPU is running at?
I hope this helps