I just dusted my PC to see if it being dusty might have affected its performance but it still performs terribly. Maybe I didn't shoot air in the right places but my computer could be under-performing for other reasons. I always ignored this because I had 60hz monitor so frame drops didn't mean much to me but I recently upgraded to a 144hz monitor and frame drops are noticeable. I really only play CS:GO so it shouldn't be hard to run at all, but it is, which is really frustrating given the parts I have.
https://www.userbenchmark.com/UserRun/32027266
https://www.userbenchmark.com/UserRun/32027266