Quest 2 VR freezing sim after 15mins or so, PMDG aircraft

Doesent seem to be headset specific or aircraft specific. i get the same vr crash using various aircraft on pico4. after 15-20 min the picture freezes and i have to reboot the pc. has there ever been a solution posted somewhere or is this an uncommon issue?
this is how the event looks like in event viewer. no idea if that is relevant

AppName FlightSimulator.exe

AppVersion 1.35.21.0

AppTimeStamp 00000000

ModuleName FlightSimulator.exe

ModuleVersion 1.35.21.0

ModuleTimeStamp 00000000

ExceptionCode c0000005

FaultingOffset 000000000268ae23

ProcessId 0x1a40

ProcessCreationTime 0x1da37e40f1885a1

AppPath C:\Program Files\WindowsApps\Microsoft.FlightSimulator_1.35.21.0_x64__8wekyb3d8bbwe\FlightSimulator.exe

ModulePath C:\Program Files\WindowsApps\Microsoft.FlightSimulator_1.35.21.0_x64__8wekyb3d8bbwe\FlightSimulator.exe

IntegratorReportId 752e4423-c3ea-48e0-9c33-991f7dd51532

PackageFullName Microsoft.FlightSimulator_1.35.21.0_x64__8wekyb3d8bbwe

PackageRelativeAppId App