I just got a new gpu yday and in some games like RDR2 i get normal usage, same in benchmark, but in overwatch, hunt showdown and csgo the cpu usage is around 80 for all cores and the gpu usage is around 30, no vsync, no fps cap, no temp problems, no pc set on energy saving mode, nothing, and in those games the fps flows around 60-110 depending on title.
I have tried downgrading and upgrading drivers and nothing worked.