This is often overlooked: After installing the latest BIOS firmware, install the ASUS Chipset from their website. That took care of my laptop performance problems and stabilized my RAM usage.
I used to have frequent BSOD on my ASUS GA502DU laptop and I tried all sorts of system tweaks and fixes. People recommended that I update the BIOS to the latest version and I did all that. I eve went to the Windows 10 system registry to do some tweak...