Ever since the newest update (19.3 I think) with the A320 series and live cockpit, I’ve been noticing that the Autopilot has become very aggressive so to say with the throttle.
I’d set my A/P to a certain speed, and if the airspeed drops to even one knot lower than what’s set, the A/P would set the throttle to 100% until it reaches the set speed, then drop drastically down to 20 or 30 percent. This happens at all stages of the flight, no matter the weather conditions. The winds could be calm and it’s still doing it.
I think even though it’s not the exact issue, one point is clear - the new A320 autothrust is extremely buggy. It overreacts, over throttles, and makes APPR unusable. It’s kind of a shame because the live cockpit makes the A320 so much more fun to fly and this sort of ruins it. Hopefully, it gets fixed soon.
Sorry if I came off ranty there I know the developers work really hard and I am very thankful for their support :)
Yes I am aware, before the update I would use APPR to get established on the glideslope and localiser first (this also makes announcing inbound on ATC easier), then disconnect it at 1500ft or so and land manually. Now, the autothrust will over compensate for the speed, resulting in excessive bobbing up and down, so I have to fly the whole approach manually.
(mind you my hand flying skills have improved a lot because of this but still.)
Here is a part of the replay file from one of my recent flights since the new update. @Aquila hope this explains it a bit better for you.
This was just after setting the Autopilot to 250kts. You can see it goes to 100%, down to 20%, then back up to 100%, then continues to go up and down for a bit. (It would be clearer if the digital throttle was shown but you can’t get that in the replay mode).