I don't believe it's only chrome's problem. I've noticed that firefox tends to lock all available memory to himself
and whenever I need it, bastard just reallocates it into swap, making whole system laggy and slow.
So.... I've got my foxy friend into a Ram jail for being too hungry: systemd-run --scope -p MemoryMax=1G --user firefox
I use FF on Manjaro and have never noticed a ram problem. I've also got it set up on a different virtual linux machine with only 2 gigs of memory and it works fine.