The issue is, we cannot replicate it in any way, and it seems to affect users with many 3rd party modules that generates lots of traffic on the Simconnect. It might be an AI traffic package, it might be ASN, it might be the VRS TacPac or a COMBINATION of them.
umberto
i've been following this topic in particular .... as i have almost identical experiences as cfoley.
essentially, all vehicles are seen on the ground .... but never all required at each departure / destination (gate called on the ground) and differing ones missing the next flight on the same routes between a number of usa fsdt & fbeam airports.
i am working my way through your suggestion to disable other addons ... but to no avail with ASN, MCE, VAI.
the one thing which seems a tad odd ( & which may be of significance) in the latest update is that when you invoke gsx, the default airline (in a group) is rarely the same at the same gate ... or is it that i never noticed that previously.
hope to hear good news soon.