@saigo , I moved this to a new thread since the other thread described an issue on AMD Ryzen whereas you are on Nvidia.
While subtle, sometimes such differences also mean different solutions will apply.
Which Nvidia Driver are you using? You can check with Software & Updates > Additional Drivers
Have you been monitoring Temps and fan speeds to see if overheating is the culprit? (it often is).
Have you run fsck or a S.M.A.R.T. test on the drive to check for bad blocks or sectors?
I am currently using 525 Nvidia driver because I had some issues when updating to 535 ( black screen)
My Cpu Temps is always below 50, and my GPU is below 60
I have updated the kernel from 5.15.76 => 5.15.78
I have an SSD but I didn't run any tests on it
I watched a video right about HDD and SSD some days ago and in fact a reason of a dying SSD is right an unexpected lag, noisy computer or random BSODs. I hope your SDD is relatively recent as the engineer on the video said SSDs have an expiry.