I wish i could help you but i dont know the answer sorry.
can you post a picture/screen shot of what it is your looking at maybe then i can try to help..or it might ring a bell
I have no idea but what I would try if it was me:
Delete the dev App folder and run the steam Integration to redownload the dev Apps files.
Also look if other tools like openhardwaremonitor, msi afterburner etc show the gpu usage. Maybe it's a global problem.
Hope it helps
A screen shot would of helped for sure, no wonder i was confused..
GPU had me looking all over the place..
should of realized it was a typo and he meant CPU
never mind we've all done it. .