F.E.A.R runs fine on my system, no lag problems whatsoever with everything maxed out, as does HL2: Lost Coast, however TF2 gets some pretty major lag on my new system, I don't get any lag on my lappy with everything turned down to minimum, however I've also been getting lag in L4D. While playing bioshock earlier I also got this issue, however I got the lag regardless of having the settings turned up to maximum or minimum, any ideas what would be causing this? Resolution is at 1024*768 and all settings are at maximum. Any ideas of what my problem is? Doubt it's bottlenecking but I'll be willing to overclock if needs be.