This latest update seems to have made it even more aggressive. Don't really believe this is an ASUS facing issue though. Android 10 is just annoying on how it manages apps.
I pretty much run one game which has me checking in every few hours for commissions. It can be the only app running and I go upstairs to make food for 15 minutes and it is closed when I get back. I even locked the phone with the game running. I have it has not being Optimized in the Android Settings and have it set to Auto-Start in the ASUS Power Master. The game barely uses any RAM, which is like 100MB-800MB. My max RAM usage from 24 hours is only 5.6 GB/12 GB. So I don't get why my apps keep getting closed. I've been rebooting my phone once a week to try and help.
Going to try disabling OptiFlex, since it mentions "saves power on standby".