Thank you for the feedback from you all: eschwartz, JSWolf, BetterRed, theducks
It seems I have the only one is having the problem.
So I have just optimized my laptop by moving all the unnecessary stuff from laptop to external usb drive, defragged and cleaned it up a bit.
And I guess it is safe to upgrade it to the latest one again very soon.
Thank you for your concerns
theducks: The only extra field i have is the one I mentioned here at:
https://www.mobileread.com/forums/sho...d.php?t=247575
all the best to you all