After i installed my BO3 i started playing normally (99% GPU usage and 75 Fps on high) but after like 15 minutes of playing my gpu usage is standing in the 60's and im experiencing major stuttering on High, but when i set my set my settings to Medium the stuttering is gone and the GPU Usage is back to 99%.
Ive tried several other games and im getting always 99% (GTA 5,BF4,AC:S and FC4) Also have the same problem with cod:adwanced warfare
My setup is:
i7 920 on stock
8gigs of ram
Hd7870 GHz edition