Thanks Support, This site is only using Adagio PDF and V2, we haven't rolled out AP 9.3B yet. I did try installing the V3 driver as well to see if that'd change anything for me (and uninstalled, and reinstalled, and uninstalled smile ).

I've tried everything in that thread, ironically except for my own suggestion of setting the service to delayed start. Tried everything else, might give that a go here. I'll update with how I make out.