Hi, since I changed out my 20" for a 24" 2 mil second 1080p my monitor will hesitate during a game, I installed the latest drivers, then when that didn't change anything I upgraded the graphics card to 1GB BFG 9800 GT, less of hesitation now, but still there even after the latest drivers downloaded. Could this be some conflict with the old drivers not having been uninstalled 1st & still being in the system?