If you break the gameplay/scripted way a fight should end the game will crash. Like if u kill someone u should not kill dou a mission. there is many scenario's this will end with a crash if u dont do it right. this can be a single sided issue or related to witch of the render setup you use, for me i did start with vulcan and at chapter 8 i switched to dirx12 cause of crash. not sure if i should go back since i feel the game run smooth now.
If u think the trainer is the reason for your crash you should save the game with trainer off and start without trainer and keep play.if you dont crash after this, good for you and have fun with the game. its easy enough without cheat so the only thing u need is money and that will be saved for you.
Good luck trying out to see Trainer is not any reason