Can you explain what "create a new save and test that" means? I did start a new game and tested, if thats what you mean. Is there an error log file of some sort that can show why the game crashes?
Fresh game, no mods, not files changes. Best is even a fresh install so you know the game is fully updated and all files intact.
Same here, Games crashes when Trainer is active. Also
, the Trainer had way more options before, for instance gwent
The other options were removed since they couldn't be recreated. I just tested a GoG install, and it didn't crash for me.