A very good tip !
Crashes are over.
I get insane fps drops randomly too, like I'm running ultra/HD textures at around 80fps.
Then randomly it locks me into 21fps, like 100% locked. Then I just load the most recent autosave, and it goes back to 80fps.
Every single crash has been when I was opening my map, trainer off or on, The trainer has not caused any issue for me at all so far.
that can be one symptom but not the only one. I never installed the textures and was getting frequent freezes/crashes.
as someone mentioned above, not using the vehicle health has eliminated the crashes for the past 5 hours+ of gameplay. i think this is may be a more common symptom.
I don't think there really is just one answer for the crashes, I believe UBISoft just made a very buggy product.