Just tell me which tasks need so much RAM
Ah so you haven’t found Low memory, apps crashing - change zram settings or add swapfile? [4.x] yet?
Browser and a core set of Android business apps (email, Slack) alone absolutely murders 4 GB (really 3.5, minus GPU allocation).
It’s a miserable experience, and having now extensively tested zram and filesystem swap ideas, I can say there is no solution, other than 8+ GB physical RAM.