Yesterday I watched Youtube video of benchmark performance between GTX 1060 and RX 580 paired with i7 8700k. CPU (i7 8700k) usage on AC Odyssey is in average 35%, while in my case exceed 90% all the time? Is this normal?
Just as a reference my OC'd Ryzen 5 2600 shows from 50 to 80% CPU usage (mostly around 70%) and 80 to 90% GPU usage when playing AC Odyssey on very high settings at 1080p/60Hz.
Your cpu should be ok, just don't use the ultra preset.
this guy managed to get almost 60fps with settings on high and very high with an older 4c/4t i5 4690K