Valley Benchmark ?

[Hi Guys Hope your well :)]

Hi guys , I have recently been trying to overclock my Gpu to around 1500mhz and 2100mhz . I have noticed in these Valley benchmark test at ultra settings my cpu usage is 30-40 in some areas then shoots upto 90 in others . My cpu is a Ryzen 2600 3.7ghz boost . Also my Gpu usage stays around 20-30 the shoots upto 50. Is this normal as I am quite concerned. I have been using msi afterburner for these tests ... 

[Guest]

In valley my CPU sits around 20-30% and my GPU is at anywhere from 30-45% to 95-99% depending on the scene. Valley is a benchmark and not a stress test so it won't always keep your GPU at 100%. This is on the Extreme HD preset with a 1080ti at 2000MHz.