I’ve not had a chance to go through your capture yet. I will get a chance this week to take a better look.
PhysX and APEX are currently at 3.3.1 and 1.3.1 as you point out for 4.6 and 4.7.
PhysX and APEX 3.3.3 and 1.3.3 are in the process of being integrated. Last I talked to Ori this was going to be in the master branch (available on GitHub as 4.8) very shortly.
I use the DCC Plugins for 3.3.2/1.3.2 for Max 2013 with no issues importing assets into UE4.
I’ll update once I’ve had the chance to dig into the clothing issue and attempted to replicate your video. (Thanks for posting that by the way!)