Performance Drop acer nitro 5
Back when i first purchased this laptop it was able to run games smoothly like sekiro or hitman 2 but after a few years, it started to become slower now. Doing my work and everything is normal but now when playing games i can barely get any fps and i always get fps drops every time for a few seconds. I even tried upgrading my ram and installing more memory which cost a lot but didn't do anything to help gaming performance. My question is if the cause would most likely be dust or the thermal paste. Because it does go really high even when playing very small games now like Minecraft it would reach around 90 max 97 and i get constant fps drops where i can't even run Minecraft at 30 fps in a new world, my laptop is pretty dusty on the outside and overheats way faster now. Any suggestions would help but i dont really want to change laptops right now i just want to know if there is a way to make it as good as before.
Specs:
gtx 1060
i7-8750h
16gb ram
acer nitro 5