Dunlop0078 :
That's likely all your cpu can muster. I'm not sure what resolution you are playing at but by setting everything to low you are shifting the load to the cpu, you should verify that your gpu is the bottleneck before you go ahead and upgrade the gpu expecting better performance. It will likely perform better than the 970 if you turned up the settings which would shift the load to the gpu. And do you need 200fps? If your on a 60hz monitor that's utterly pointless.
My monitor is 1920x1080 and 144hz. I'm totally fine with getting 150-200fps, but I would like to know what could be the issue as to why i'm not hitting the fps limit in overwatch that I have set to 300.
I did do research before purchasing and I couldn't find anywhere that a 4690k will bottleneck a 1080ti at my resolution and any games that I play. My cpu isn't hitting 100% load consistently whenever I have checked it, I'll have to open resource monitor and let it run for a bit while i'm playing overwatch and see. There isn't anything running in the background either. I highly doubt overwatch's lowest settings are too much for a 4690k, doesn't seem likely.