Performance degradation over time on PC

Game seems to run well in the first couple of matches and then the following ones suffer from a performance decrease. I've checked using msi afternerburner... and it doesn't seem like I'm running out of VRAM or system RAM. The issue could be related to high cpu usage/memory leak (though stats show i've got enough)/ nvidia dlss/the sharpening filter (i know it's not supposed to be intensive but some have reported it causes issues. Do take a look.