Aircraft drift off the navigation path

I can safely say that since AAU2, I have been experiencing a strange attitude with most aircraft (Cessna Grand Caravan, Diamond DA62, Daher TBM 930, Daher Kodiak 100)… they drift off their straight path, then after a few seconds, they try to get back to the path and still go further to the other side of the NAV path and thus create several S curves banking hard right or left. This happens with AP active, little to no wind, and straight paths or turns, where the above mentioned aircraft overshoot the turn and then keep forming S curves to get back on the track.

This has been very annoying and wastes a lot of time. Any ideas?

If this is occurring when in external view with Autopilot, then there is another thread that discusses this issue and has a workaround.

Thank you for the link, but this is not it. I am not using Beta.

The GPS Nav is active but the aircraft drifts off the path for a while, then tries to get back on the path but while doing so, it insects the straight GPS path several times and, thus, forms several S curves before getting back in that line.

This doesn’t happen on Cessna 172 or the Bonanza G36 (same systems). Just on the above mentioned four aircraft. Even on TBM 930!

THE OP of the thread I referred to mentioned “Beta” without specifying which (a Pet hate of mine). He was referring to the AAU2 beta. You may have thought he meant one of the current SU13 betas.
The problem has existed since AAU2 beta & is rumoured to be fixed in the latest Beta (SU13).
If you saw the word “beta” and didn’t read further then you may be missing a solution to your problem.

Thank you. I’ve read it. My issue is different. External or internal view, it happens anyway.