@Ninja-Knickers I don't believe this is server-related, for the reasons you state. It sounds like in your case something went wrong on the initial install end, and thank you for posting what helped.
@TakumiFujiwara54 If you start removing some of those mods, do you notice if any in particular have an effect on stability? From your description it sounds like some car/mod combo may be a factor, so if we can narrow in on which one(s) that'll help immensely.
@Solumious Sorry I don't have any timing/ETAs. You mention taking the steps, just to be clear have you tried the steps of removing customisations that the community have mentioned? There's even some steps earlier reporting that doing it twice can help.