[SOLVED] High memory and disk usage

Jan 30, 2021
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Hello, I've been experiences some problems since the last two weeks...

As soon as i start the pc, memory usage is already at 30%, and when i try to play almost every single game, memory reaches 99% and disk start going high too.
I just reinstalled win10 a few days ago and nothing changed, also I scanned my pc with malwarebytes and checked RAM with memtest86 and disk with another tool.
Everything seems to be fine, but my RAM is always at 30% with nothing running but drivers and discord...
I also tried to clean boot win10 by disabling everything except windows services, and my RAM usage was still high but a bit less (25% instead of 30)

pc specs:

msi z-370 gaming plus
GTX 1050ti
i3-8100
2x 4gb hyperx fury ddr4 2133mhz
Seagate BarraCuda 1tb