Well, It is the time to report back again;
I did a fresh NetBSD Daily install again. this time without any of the options enabled ( @pin gave the picture).
I can't say which one did the trick, the Options or the New Daily Image. but now I have no problem with the memory. not even memory leak (hope it stays this way. it is only the 12hrs test.)
Opening firefox
with 10 tabs and working with it for at least 2 hrs, then closing it back would release the entire memory firefox
was using.
😁
NetBSD localhost 9.0_STABLE NetBSD 9.0_STABLE (GENERIC) #0: Sat Apr 25 10:53:48 UTC 2020 mkrepro@mkrepro.NetBSD.org:/usr/src/sys/arch/amd64/compile/GENERIC amd64