I'm about to configure P3Dv4. While flying, I change settings and see if the changes do not hit the performance too much. The following scenario. I'm flying with the Carrenado Baron 58 a GPS course with the autopilot turned on (AP, NAV, ALT), Garmin GNS 430 switched to GPS. Everything works perfectly. However, during the flight, I go to the OPTION menu of P3Dv4, e.g. to change something on the graphics settings, then go back into the cockpit, the autopilot turns off at irregular intervals. Namely, AP, NAV and ALT are disabled. Also, the GPS mode turns off in the GNS 430. So I have to press 4 buttons each time to make the autopilot functional again. The same happens if the flight plan is not already loaded in the start menu, but only when I'm already in the cockpit view. At irregular intervals again and again the same shutdown. Is there any tip to turn this off?
This behavior is not limited to this type of aircraft, but is also present in the Stock aircraft. So it should not be an aircraft dependent.