Service host local system is using 94% of my memory and I don’t know why, is there anyway way to bring it back down to normal?

[Microsoft Windows]

My pc was working fine and about 2 days ago my pc started freezing up like crazy and eventually would just crash my pc, I’ve restarted my pc multiple times and after about an hour of running the memory for service host jumps from around 10.2 MB to 2,381.6-5,473.2 MB. All I did was shut it down after playing my video games and the next day it started becoming unplayable.

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