Heya, i have the same issiue. Been having alot of issiues with "Normal" Windows 10 and Atlas came across a youtube video so me and a friend gave it a go. Both got kicked by vac, been trying to do some research but to no avail. 2 reconnect bans game 1, and then game 2. The friend went back to SpectreOS.
It does work with faceit tho, so thats my only option atm.
I'd gladly take any info that could help me resolve this, im liking atlas alot. But… This is a huge dealbreaker =(
One thing i noticed id the link you provided was, that i probably didnt run the "Set Windows Default Mitigations.cmd" as Administrator. Haven't played MM in a few days just becaus of this "Bug" in Atlas. Faceit works like a charm, and a few hours ago i did a game on ESPORTAL with no setbacks.. Beside my ingame performance ofc.
Imma hop into a few more games MM and report back with my results during the evening, if the kids can behave for once =) Im running 22H2.v0.2 btw