You can check it here bro - thebottlenecker.com
But with how it sounds its most likely a bottle neck. Im currently using an i5 6400 with a 1070 and im at a bottleneck
When I play overwatch for some reason I can hit a stable 144fps on 1080p on any setting. My cpu stays at 100% and I can’t figure out why. It averages at 80-115. Overwatch is a well optimized game so idk what is eating up my cpu .
I like this group, i was in one called pc master race for a while before leaving cause haters would be all overall of these comments with things like "your a fucking peasant, you dont understand pc bla blaa etc etc!!!
Even the i5 7600k is a 15 percent bottleneck so basically if you have that processor you shouldn’t go any higher than a regular 1080 because you will not be able to use the extra power with that cpu