G15: BIOS 1.20.0 Causes SSD issues

I recently updated to BIOS 1.20.0, immediatly after update i was unable to keep my OS from becoming unusable after few minutes, even in a clean Windows install. Tried turning GPU drivers off, didnt work, its not GPU related. 

SSD health looks good, and RAM too.

I can see that after few minutes when the computer boots, RAM usage does not change, but SSD speed starts to slow down. Until programs start to crash. I noticed some graphical glitches too, but they look more like there is some problem with the RAM (some yelllow vertical stripped lines), i can play games just fine, there is no graphical glitches. Also tested the RAM in another laptop, it does not have these problems.

My conclusion the root cause is the BIOS update.