Under another forum topic I had meticulously documented my issues with the Managed Speed bug on every flight. I had also uninstalled and reinstalled several times with no positive effect. Then, I followed a very meticulous process of uninstall, pausing a/v, installing as Admin, and rebooting as each new step was taken. This cured the problem for me. I went from getting the bug every flight (even more than once) to successful completion of at least 6 very similar flights. However, others who tried my process did not all (if any) get the same result.
For some reason I had an issue with P3Dv4 that caused me to need to uninstall/reinstall again. I followed my own instructions, but to my surprise, I had the bug again. After 2 uninstall/reinstall rounds with the same result, I tried the below process, and I just completed a successful flight. Now, I do not think completing one flight necessarily proves this process absolutely cures the problem, but given the impact of this issue on many, I do not want to sit on this. May as well let other test it, too.
Here is the "New" process. I'm sure a few of the steps are totally unnecessary ... but this is what I did.
I would advise caution in deleting some of the data/folders I delete below IF you have both the A318/319 AND A320/321 products. I only have the 318/319 product.
-- uninstalled A319 Professional using Control Panel
New steps start here
-- checked that the uninstall had deleted the C:\Users\myname\Documents\Aerosoft\Aerosoft A318-A319 Professional folder and it had
-- saved flight plans (C:\Users\myname\Documents\Aerosoft\General\A3XX Flightplans) in a new location and DELETED the folder
-- DELETED contents of C:\Users\myname\Documents\Aerosoft\General folder
-- Make a copy of the C:\Users\myname\Documents\Aerosoft\ASUpdater\Products folder and save in a safe place. If you only have the as_a318_a319_prof.xml (or ONLY the comparable file for the 320), you can skip this step.
-- DELETED the C:\Users\myname\Documents\Aerosoft\ASUpdater folder
New steps end here
-- paused a/v
-- re-download A319 Professional from my account and installed as Admin
-- restarted computer
New steps added here
-- Look at C:\Users\myname\Documents\Aerosoft\ASUpdater\Products. If any files are missing, copy them back from the saved location.
New steps end here
-- paused a/v, ran ASUpdater as Admin, installed all updates
-- restarted the computer.
New steps below
-- Take whatever actions necessary to recreate/reload your navdata. For me it is in C:\Users\myname\Documents\Aerosoft\General\A3XX Navigraph
-- Copy saved flight plans to C:\Users\myname\Documents\Aerosoft\General\A3XX Flightplans
-- ran A3xx Configurator and set appropriate data there.
I never touched P3Dv4 until all this was completed.
I suspect the most important of the "new" steps is deleting the ASUpdater! Can't imagine FlightPlans or navdata folders being the problem. Still this is what I did.