Hi all, sadly I'm having this exact same issue. The aircraft is 'flying' but the cockpit has completely froze, displays are frozen, buttons/switches don't work etc.
I'm using MSFS2000, it always seems to happen on decent after a long haul flight. I can't seem to pinpoint the exact trigger but it's always during decent, always at the end of a flight that's been at least 8/9 hours.
I don't think it's my PC set up, I have a RX9070 XT, Ryzen 7 9800X3d, 64gb RAM. I'm not using anything else periapical USB devices other than the Thrustmaster Airbus sidestick and throttle quadrant.
Would love to know what's causing this and how I can work around.
Best,
USS Scirocco