Maybe this will tell you what to do, but if you have a weak computer or graphics settings at the very best, do not be surprised that you have drops.
"§3 - Save Editing
Causing extreme lag or game crashes by save editing is not permitted. Extreme lag will not occur from duplicate parts unless the amount is truly excessive. If you save edit to create a very long trailer combination but cannot safely handle it, you are liable to be banned for reckless driving / blocking and recommended to remove the particular mod. If the Game Moderation Management thinks that your modification is not f