Question AMD Core WDT doesn't trigger when OS hangs

[-1ffy]

I want my PC to automatically reboot when Windows hangs. In my BIOS settings I've set Core Watchdog to Enabled, with Interval on ~10s and Severity on Fatal. But when I make my OS hang (by running a Rust program that spawns 32 threads with infinite loops and giving it realtime priority) nothing happens. I assume core watchdog may be different from system watchdog and may only trigger when the CPU itself is unresponsive, which it technically isn't in my case? If that's correct, are there even system watchdogs in gaming mobos?