I think your fps drops are happening because your GPU keeps timing out (several errors of the same type).
Event Name: LiveKernelEvent
Response: Not available
Cab Id: 0Problem signature:
P1: 141
I recommend removing all drivers with Display driver uninstaller, and then installing the latest driver for the card.
You may need to update your BiOS (it’s already outdated when you buy a new PC). See this thread from the staff for more info:
I also noticed you have some older Windows files (did you upgrade from 8.1?) that are reporting errors. I recommend closing background apps to address that.
https://us.battle.net/support/en/article/23848
Let me know if you need more help.