2 Freezes, then a failed engine

At random times, with all aircraft, the simulator hangs/freezes for approximately 1 second, followed in 2 seconds by a long freeze of 30 seconds. The VR image goes dark if using VR during this time. The monitor just displays the last generated frame.

The sim then resumes flying, although the aircraft engine turns off and on in the moment the sim resumes. This happens even if I am at minimal graphics settings, in and out of VR.

All USB drivers are updated and current. The sim is updated and current. My windows updates are fully current.

System: i7-10700K, 64gb Ram, RTX 3090, Windows 10. Peripherals Honeycomb Alpha & Bravo, CH pro Pedals, Keyboard & Mouse, HP Reverb G2.

Thanks for reading.