This is the video I have of it happening to me in the A-164. Happens in other AA armor vehicles as well, and happens with or without mods. Also pardon the titles cutting off.
https://www.youtube.com/watch?v=kL_eAfO524c

I experience the same problem with an upper-mid range PC that experiences no lag or other issues in singleplayer or multiplayer. This is disappointingly not addressed yet, two months later.

I've attached the files requested.