Notifying Host about AudioProcessorParameter Changes

[reuk]

Apparently it’s possible to get REAPER to read automation values when plugin UIs are closed:

Reaper does not write param automation if GUI is closed

Hi! Just for future reference, there is a fix for this in the Reaper settings! Preferences > VST > VST compatability > Parameter automation notifications Set to “process all notifications”. Works like a charm.

I haven’t tried it myself, but it might be worth testing to see whether it produces the results you’re after.