I've been gaming/streaming on the same PC for the past 3 years and have never had any issues. Just 2 nights ago my GPU and CPU usage have both been over 50% to the upside of 90% and is causing me massive lag/fps drop. I've tried Overwatch and League of Legends as both games as League is much less graphic intensive and same problem with both. I checked both temps and both are fine. The problem started last night, i received an NVIDIA driver update, lagged before i updated and then lagged after as well. Not sure what it could possibly be. all fans are working and i can't figure out for the life of me what is wrong with it. I even lowered my graphics and it didn't help anything. if anyone could help me i'd really appreciate it!