Um. I posted logs already in this topic, twice
At least I think I posted correct links.
BUT... I think my problem fixed itself... somehow.
Like I said - I tried installing other mods to see if this is main game issue or just mod issue.
Every other mod I've checked had no problems with 3D models, everything was loading like expected.
Today I've launched BP mod again... and this time everything was in it's place.
All models were there, there were no glitches, everything nice and dandy.
I have no idea how it happened but... oh well, at least it's working now.
Maybe some other mod updated game assets or something, I dunno.
Anyway thank you guys, I hope I didn't waste lot of your time