Seems something odd with Halion (SE in my case) in that it ignores the preference for AOT setting when opening a first instance…when opening a 2nd instance it opens as preference.
You can also right click on the plug bar (alongside the preset window) & tick/untick AOT…but again this is forgotten when opening a next 1st instance of the plug while other plugs would remember how you set them.
So for now when opening those you’ll need to right click & de-select AOT but should only be on the 1st instance of each.