Update...
Our MC guys are still having a lot issues even after the update. Posting large, 3D programs takes a very long time, docs are sometimes taking long time too. Both are way longer than in 2017 and sometimes max Z in docs is incorrect. Occasional crashes are still occurring although not nearly as bad as before the update. We've checked with colleagues at other sites, they are all seeing the same behavior and now a number of our guys, and at our colleagues, are thinking of jumping back to 2017. Jeez, at this point we're starting to joke about the situation being a "Mastercam Tax" and are considering migrating some MC guys to unused NX licenses. Every time I think about how horrible new MC releases are, I have to wonder what in the heck CNC Software is spending all their cash on. It certainly isn't their testing department.
NX 12.0.2