Back when I had to use McAfee on a work PC; I was using WSL 1 for building the projects I was running. Symptom was basically: do a compile, lose most of your RAM until next reboot. Stopping WSL wouldn't reclaim it; nothing showed up in Task Manager, Process Explorer, etc. The RAM was just gone; unusable. Post a bug to WSL, was immediately asked if I had McAfee and if so to disable/uninstall. Problem solved. But, due to insurance reasons, I had to have an AV running, and powers that be decided Defender was sufficient. Never McAfee again. It's been a pile of crap for decades; no signs of it getting better, either.