Today I flew the SF50 and used the G1000 FMS. For some reason the FMS seemed to be unable to fly the SF50 in a smooth manner. While in level flight after a 90 degree turn on to an ILS approach using the GPS, it kept oscillating up and down and right and left. Likewise in climbing to a VOR after takeoff, it could not hold a steady climb. I would like to use the CF50 for some experience with x-plane 11 rather than the C172 as the CF50 is faster, but the G1000 sure works better on the C172.

Anyone have any ideas what the problem may be. I have a medium speed computer system and the frame rate is about 25 to 28 on these flights.