I suspect mods are causing a lot of problems on Patch 10.
I have loaded a new game from scratch with no mods whatsoever and a lot of the previously reported problem are not present.
My "modded" game is now inaccessible. I've flying exploding trucks, base game trucks and base game trailers, they were displaying wheels outside and floating but now everything is crashing the game.
Will continue on my new game, building from scratch.