Congrats!
You're quite probably the first non-japanese/korean speaker to have ever finished Arcturus 
Thanks to you I've managed to put my hand on valuable saves all over the game, as well as correct some nasty bugs, so thank you for your hard work play!
And the answer is: I don't know, but it's quite possible 
Well, I have you to thank for that, don't I? Your work and the tools you've acquired have made this all possible.
I think most of the bugs left that aren't game-breaking, mostly just annoying, are the actor bugs, which I think I've detailed all of them (or most, if they're in side-quests I've missed) since they're somewhat sparse. They even happen during the
Edit: If you want, I can give you my final save for the after-credits sequence, if you need it to fix the errors.

Also, after checking again, the game still crashes after the flashback in Philadelphia.