When using my PC, generally in games or Solid Works, my Cpu and Gpu usage drops from 85%+ to ~30% for around 5 seconds. Cpu stays around 50 C and gpu around 60 C.
Things I have tried:
Running one stick of ram (tried both)
Mem Test
Adjusting ram timings
New ssd
Clean windows install
Update gpu drivers
Latest bios
Remove all OC's
Specs
4790k
16 gb crucial ballistics sport
Msi GTX 970
Crucial mx500 ssd
Evga 650w psu