elfprince I have 8G, and often see over 70% usage just with Firefox and Brave open, with over 30 tabs.
Delayed response is a common daily thing.
delayed response was my early Solus life with 4GB^^. It was normal daily to peg out at 99-100% to where you could barely move the mouse.
*and my life with wireless keyboards currently.
( I am 100% wired again and delay-free there). I digress.
with 8GB (I bought a used 4 to go with my 4) I never had 30 tabs open (20 max once maybe?) though but I could certainly finds ways to make it doggy, so if you aren't running heavy programs alongside the browers/tabs your theory (which I share) would seem to confirm 16 is the difference. I still find memory unaffordable and count my blessings the person would part with that 8 without raising the price of the rig.