So I cleaned my pc today using microfibre cloth and q-tips inside and vacuumed the outside case and air filters.
I ran the pc, everything was normal until I played some overwatch after a few games it started stuttering weirdly like never before, every few seconds a frame will freeze.
I tried more games, same issue.
UPDATE: I think freesync is the problem with the new amd update. I just rolled back the driver everything seems fine now.
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Also consider buying a can of compressed air. Much easier and safer than q-tips for removing dust from CPU heatsink and from inside your video card. $5-7 at Staples, or search "compressed air can" on amazon.