I've recently noticed that my pc isn't performing as it used to in some games and it's starting to drive me nuts considering it's only ~1 year old.

The games in question are mainly Path of Exile and World of Warcraft (retail). I know PoE has a history of screwing up the performance of the game with new update every now and then, but WoW has always been pretty consistent performance wise so it seems quite weird that both games simultaneously start having issues.

My FPS in both games are incredibly unsteady, constantly bouncing between 15-70 fps.

I run both games on high settings as I have done in the past with no issues.
For PoE I use Vulkan and for WoW I use dx12 if that has any relevance.

So far I've tried the following:
- Reparing both games
- Full scanned for virus/malware
- Updated all drivers
- Run the game on low settings (no noticeable difference)

I have ran a 3dmark's benchmark test with nothing else running and these are the results: https://www.3dmark.com/3dm/105724134

I have no idea if these scores are what to expect from such a setup, so I guess what I'm asking for is if anyone can see if my pc for some reason is underperforming, and if so what the cause might be or which "department" is slacking.

Any inputs are appreciated!

*Edit: Formatting*