When I hit the "L" key to fast-forward while playing on the timeline, and hit about 4x speed, the audio stops scrubbing (I think this is normal), followed by Premiere Pro locking up. There's no way to halt the playback at this point, and eventually Premiere Pro locks the entire system - even the mouse cursor won't move. If I shutdown/restart fast enough (after Premiere locks, but before the entire system locks), I can get a reboot to happen. Otherwise it's the reset switch.
It is very similar to the problem described here, except I'm running Premiere Pro 2022 on Windows 10, and the video format is XAVC S HD:https://community.adobe.com/t5/premiere-pro-discussions/premiere-pro-cc-2020-crashes-on-fast-forward
If I edit AVCHD footage, the problem doesn't seem to occur. I've tried turning off hardware accelerated encoding/decoding in the Media preferences, with no effect on this. I'm guessing it's a Premiere bug - suggestions?