Cpu bottleneck ?

Specs - intel i5-7400
Nvidia 1060 3gb
16gb ram
Why does it say i get 100% cpu usage and i keep getting stutters in game my gpu is like 60% and ram is fine is it like the last games where we have to wait for a patch to fix this ? I have another pc that has no problems tho it has a 1 generation better cpu and a 1060 6gb but still this should be fine