Welp, it's doing something new now. Made it to the end of playthrough #3 without crashing again, until the post credit statement. Hitting Esc didn't take me back to the main menu like normal, the game just quit on its own, no error. Starting playthrough #4 (I mean, you need at least try all the faction origins and so many builds), it's done it twice more. After the second "fix" in the mission where you meet Bellara (breaking crates using rogue's running hard attack post-fight), and again in the cut-scene where you get the dagger. Just quits, no error; like I used the 3-finger salute (Ctrl+Alt+Del), but I didn't. Game restarts just fine when I get back to it.