Same issue as well, same scenario - recently upgraded my PC with 12600KF, Squadrons won't run and just quietly closes after the easy anti-cheat splash screen.
not saying this is a solution, but i was having the same issue with easy anticheat loading then game dropping, so i made another windows user and that fixed, now, i noticed on the new user, the one drive was active whereas on the previous user it was not. Upon reloaded one drive to the user that had the problem the game worked fine. Just a heads up if you have one drive disabled for whatever reason this might be the issue.
Best of luck
