aaaaaaand SU1 fixes:
drumroll
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I hate to say this, but SU2 is supposed to be the big airplane fix release
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maybe so, but compare the detailed list of fixes in the same thread for the non-Asobo aircraft (Carenado, IniBuilds, Working Title etc) with Asobo’s one hit wonder.
Do you have the same issue if you follow the OP’s steps to reproduce it?
• Yes
Provide extra information to complete the original description of the issue:
• n/a (original description is complete)
If relevant, provide additional screenshots/video:
• n/a
Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes
Provide extra information to complete the original description of the issue:
It gets worse during the landing procedure
If relevant, provide additional screenshots/video:
•
As a developer, the “wobbly behavior” of the 208 autopilot looks a lot like a PID tuning problem to me, considering its full behavior. Especially changes in sim rate seem to confirm this, as you can see the PID correcting and seeking. Ah well, hopefully it is fixed soon.
I’ve heard, that if you enable Vertical Speed, and put your desired altitude bug 1000ft above where you are currently at flying, and then set the vertical speed rate to zero feet using the wheel, that the wobbly behavior is solved for as long as you keep that configuration. Maybe it helps someone.
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it absolutely is. there are a lot of naiive PID issues in the default planes, ranging from porpoising while trying to hold LNAV headings to gross autothrotttle overseeking (sometimes from flight idle to TOGA).
A little off-topic, but how did you get that livery? It looks awesome
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Looks like one of the default cargo liveries.
Months and months go by and the left aileron is STILL uneven on the 208. this is getting ridiculous. how do you fix the autopilot roll issue without addressing this? it would take pure laziness to have not noticed this as developers of the plane. I’ve reported this an exhausting amount of times. PLEASE FIX THE 208. it still wobbles, it still rolls to the right. please its a lot of people go to plane and should be a very very easy fix.
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As an autopilot is using a control loop to follow your settings and correct external disturbances, it will also have some type of PID controller to achieve this. And as with all PID controllers they need to be tuned to the system they control. I’m sure in aircraft autopilots this will be done by the manufacturer, and the end user will not even have the access to change that tuning, while for drones you can do the tuning yourself, which would make it appear that autopilots don’t have a PID controller.
I’m using it as a term for part of a control loop. Physical PID controllers can come in many forms, but as your document states they are “for smaller aircraft […] and general aviation planes […] commonly used”, I don’t understand what you’re getting at, sorry 
Just flew the C208 Caravan in SU2 Beta. Much improved stability on auto pilot for climb out after departure along the route and on the ILS down to 500’. Stayed on course, followed the localizer perfectly. Much improved.
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What about without AP on? The plane has a massive Dutch roll tendency with it off too? Is it better?
So you mean to say FCCs (which are used in fly-by-wire systems, which I’m certain the C208B doesn’t have) are older than PID controllers, which are around 100 years old (see Proportional–integral–derivative controller - Wikipedia)?
But we’re already way off- topic, so maybe we should stop that discussion.
what I assumed you were saying, and which nobody can really argue with, is that Asobo’s autopilot code for the C208 is likely implementing an algorithmic version of the classic PID equation to control the pitch and yaw of the aircraft
…only it is doing so very poorly, since it displays symptoms (dutch roll, porpoising) which are emblematic of badly-implemented PID software (and hardware) solutions.
from the same Wikipedia article:
“If the PID controller parameters (the gains of the proportional, integral and derivative terms) are chosen incorrectly, the controlled process input can be unstable; i.e., its output diverges, with or without oscillation… Instability is caused by excess gain, particularly in the presence of significant lag.”
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Agreed, we’re clearly posting past each other. 
No Dutch roll at all. AP on or off.
TL;DR: lots of important graphics tweaks like:
but finally there is this:
a discussion of how MSFS’s PID-based autopilot logic works internally:
https://forums.flightsimulator.com/t/put-sim-rate-back-into-career-mode/713035/87?u=speedwayst4r