Alright, I swapped out all the single vehicle mods with IVpack and Vanilla Works Extended. I also left the rims (stretched and lore friendly packs) in. For some odd reason, it behaves better with mod packs that use a collective tuning folder for all the vehicles. Maybe I should try compiling all my cars into one mod pack.

Is scripthookV the only script you have installed?

I have the latest version of the game, and I have computer specs that are past good enough to run this game. Is there a fix that will allow the game to keep the center of the island other than by only having two or three addon cars installed?
https://imgur.com/5UyDRdy
https://imgur.com/ZbODYky

If you have enough addons installed that you could load online maps in the previous version, I'd look for this too.

EDIT: This is what it looks like with just rims and and some addon cars installed. If I remove MPChristmas2017 from the DLCList, the map and online map features return.

How is deleting the game a trick?

@Jitnaught Glad to see that he has help. I'd hate programming a dll and asi all on my own.

Does anyone help him?

@krashadam Alright, thanks.

So how long does it take to actually edit scripthook? I know the developer said that the runtime in the dll needs to be updated after a dlc release, but is there more than that? And how quickly does Alexander Blade know about a dlc release?

Another update:
I tried using the original Comet model, and the only part that I can change are the wheels. The visual parts are still missing. I also tried to delete the three wheels (I realize that it's three wheels that are unnecessary and not two), but ZModeler keeps exporting corrupt YFT files. Well, that's a discussion for a different time. Are there any known fixes to getting this to work yet?