I'm playing around with modelling again, and I'm getting this strange issue. It's the 2013 Tahoe (OfficerUnderwood) with a Whelen Liberty on it. Everything is fine in ZModeler3 and OpenIV, but as soon as it goes in game it completely breaks down.
The top screenshot below is the messages that I'm getting on export. This might be the cause of it, but its strange how it looks fine in ZModeler and OpenIV?
Thank you for your help!
Update:
I've managed to fix the export messages by assigning mask and bump textures etc. You can see the lightbar base in the ZModeler screenshot and the OpenIV screenshot are different, in that the OpenIV image has no texture on the stand.
This has no impact on the issue, and the model still freaks out. After a few moments, everything around me starts to reduce in quality (ground textures break down, traffic disappears etc). Maybe it's a LOD issue? I know that the Tahoe model only has LOD0, as it came, but the lightbar has LOD0-3.