Im running a NITRO 5 (2018, AMD, Rx560x Series, AMD Ryzen 5)
And everything as of today started running real sluggish. My FPS fluctuates hard and it feels like lag even though I have 10 ping. how to fix this, My disk is being used up 100%. I can find a way or any fixes. I tried everything and yes I did try setting my laptop to high performance, And after awhile my computer shutsdown.
Acer Nitro Sense: (Its in Fahrenheit)

If you didnt catch any of what I said I will restate them here with less detail.
Issues:
Games run sluggish kinda like lag (still have good frames like 60+)
Disk being used 100% when playing games.
Computer randomly shutting down when playing game (probably due to the CPU or Disk drive)