After 90.5 hrs of perfect performance, both my GX Touch screens randomly and simultaneously X-out airspeed tape, altitude tape, attitude indicator, autopilot, and Comm 1 (altho radio performance is unaffected), This started with Comm1 only, then spread. At system start-up, indications are X-ed out nearly all the time, periodically shifting back to a brief normal display, then going back to red X's. After maybe a half-hour of use, the normal display appears more than half the time. Attitude Indicator has to reboot each time it comes back to normal display. What in the world is going on??