Odd NX assy navigator behavior with Windchill

@Dave_K 

The c0000005 error (when I had it popping up a few times 2 years ago) had to do with the registry being somehow corrupt. It was a difficult thing to reproduce but essentially boiled down to a stuck WFS service that had to be force uninstalled/removed with a Microsoft uninstall utility. I had a ticket with PTC on this and the recommendation was to:

- reinstall after the registry cleanup

- delete the %Appdata%/Local/Siemens folder

- run WGM as admin to first connect NX to it

- run per usual and hope for the best

Large assemblies will always run way slower in a stand-alone session than when connected to the WGM. Do you have any anti-virus software running? This may help: https://www.ptc.com/en/support/article/CS50545

We also have some other monitoring software that I had to exclude NX (ugraf.exe) and WGM (uwgm_client.exe) from to help the slow loads along. Our assemblies are in the 7GB range and with load_options.def file set to partially load + anti virus exclusions we got down to about 4-5 minutes instead of 15 without. 

There is a known "feature" in WGM that will cause major slowdowns too that has to do with mass reporting. Do you have mass reported from NX (NX_Mass via MassPropMass and MassPropRollupMass) to Windchill with the MSP:Mass mapping PTC suggests? https://support.ptc.com/help/windchill/plus/r12.1.2.0/en/index.html#page/Windchill_Help_Center/WWGMforNX/WWGMNXAdminConfigMappingwithUnits.html# doesn't point out that if there are modeling errors in NX that NX happily resolves - they seem to trigger mass calculations on the Windchill side for the number of errors that exist. Specifically: if you have pk_topol errors showing up in your syslog, you can go from a 30second load/save to 15-20 minutes. 

In NX if you do "Examine Geometry", "Feature replay" and "Part cleanup" it may help at least identify this. But there isn't a fix yet on Windchill not triggering a save even when you don't want one. The only thing I was able to do was remove the MSP:Mass mapping for NX_Mass until there's a fix in some newer version of WGM.