The game automatically choosing my radar mode is a complete pain in the ass. I dislike it, it does not increase my combat effectiveness. On some radars, such as the Mirage 2000C-S5’s, ACM defaults to pulse, making it nearly impossible to use. I should still be able to choose my radar’s behavior without this very inconvenient and flawed mechanic doing it for me.
EDIT: apparently M2K is bugged. Community Bug Reporting System