99% usage on a GPU is fantastic. But 99% usage on a CPU indicates a problem. If you're only running a GTX 970 then your CPU is thermal throttling, or perhaps you have a very low amount of RAM. What kind of CPU cooler do you have installed? You need to checked the temps of your CPU, and while you're at it, checked it for your GPU as well and respond back.[/quotem
CPU Temp is 58 degrees, stock cooled with an exaust 120mm to its left and above it, I have 8Gb of RAM
GPU Runs fine, temps are a cosy 62-68 degrees