when engaging lnav the aircraft keeps swinging left and right, and cannot keep straight on the track.
Device: ipad 10
Operating system: ipad os 26.5.2
Have you updated infinite flight to 26.3? It’s a known bug and it’s only specifically on the older version.
i experienced it on 26.3. although now i tried once more and this time it didnt happen. maybe its fixed now
I’m still having this issue on 26.3.
Edit: Restarted the app and it seems to be fine now.
same issue it’s unable to maintain the fpl doing left and right constantly and i have updated to 26.3
It does happen to me as well despite being updated.
The A350-900 seem to do better turns even at 300-320kts IAS.
The -1000 seem to turn late then miss the spot then tries to capture the line but has to sort of turn left and right constantly for 3-4times till it gets stable.
Try out in BETA
Beta version 350-1000 handles Turns better 
Same thing happened here
M on 26.3 and literally experiencing the same issue right now in flight
Yeah I had the same problem but the aircraft was not maintaining altitude and kept on decending deliberately even though the speed was more than enough to keep it from stalling
This is probably because you are on 26.2, where the A350-1000 is technically accessible but the autopilot behaviour is broken. Update to 26.3 and this issue should resolve.
I am having the same issue at the moment. I am using the beta right now, and when there is a turn that is more than a couple degrees in the A35K, with a decent crosswind component, the same issue occurs.
I think both the A35K and A359 have an issue where when there is a significant crosswind component when approaching the next waypoint, the turns become very unrealistic, with high bank angles, and rolling both left and right quickly, rather than smoothly rolling in only the direction in which the turn is happening.
One more issue I noticed, when adjusting my VS during climb by 100fpm at a time, the plane’s nose jerks to attain the new VS I set, rather than slowly pitching up/down to attain the new VS. This is a problem when trying to slowly increase VS in 100fpm increments as there are repeated sharp increases/decreases in pitch.
Seems like there is still a fair bit of work to be done on the new autopilot update, but if there was a way for the IF dev team to just copy the 777 autopilot logic onto all other planes, it would definitely be the best option available at the moment, unless they do a much more significant autopilot behaviour rework!