I own a pentium 4 HT 3.4GHz Northwood CPU. I have been trying to find out for years why every game i would play stutters and has generally jerky gameplay when involved in heavy "firefight" areas. Yesterday i did some research into it and found that if i set the affinity to 1 cpu instead of 2, it somewhat improves performance but does not eliminate the stuttering completely. I am nearly towards the end of ending this laggyness. Anyone have any ideas?