i have a gtx 460 running a 1920x1080 monitor. When i'm playing Black ops, sometimes my fps will drop from around 90 to about 2 for around 5-10 seconds. sometimes this doesn't happen during a match and other times it happens 4-5 times. i use evga precision to track my graphics card and it shows that my card never gets above 60C and my GPU usage drops when my fps drops. i also play GRiD on the same rig on high settings and i don't get this problem. I may get a quick shutter maybe once an hour while playing, but nothing that affects gameplay. My system is custom built so could this be a problem with my construction or a possible faulty component that has problems under stress? I have my graphics OC'd just a little bit, less than 10%.