I've discovered a new crash related to the trainer (easy enough to avoid though).
Sometimes when you instant travel in the car (pay gil to instantly auto drive you) and you have the infinite fuel cheat turned on... the game will straight up crash (not always, but sometimes). I've noticed the frequency in which this occurs is increasing the deeper I get into the game and the bigger the world map gets.
I have found that just turning that feature off before you pay gil to instant drive you, you can avoid this drama.
Just a lil tip in case anyone runs into this too.