I’m using MSFS as an useful training tool for ILS approaches in CAT III conditions, flying C172 (not 1000) and TBM 930 mainly. Since release the Sim had some serious issues with the core program but, surprisingly, the Autopilot functionality had no major issues . . . so far, until now.
Since one of the last updates a series of AP problems occurred. It seems to me, as if it gets worse with ervery update. First, ILS approaches using the AP in APR mode, don’t line up with the RWY.
On the FAF (arriving at correct ALT, correct intercept angle) the AP in APR mode catches the LOC course well and starts the decent along the LOC course. But the closer one gets to the RWY the more the plane is guided slowly to the right or to the left of the LOC course. The plane is decending well on the correct glide path but it doesn’t arrive at the beginning of the RWY. When you come out of the fog you’ll see the RWY landing lights some 100 m left or right to the RWY center line.
Second, most recently it gets even worse. The AP in APR mode doesn‘t catch LOC course at all anymore. No LOC course guidance, no decent on the glide path, just no function.
The HSI display is working correctly. If you are smart enough you can fly manually following the LOC course shown by the HSI needle and decent watching the GS indicator.