I came here for the same reason! After a certain point, the game became unplayable for me. The biggest problem is, as you said, the game refusing to load the next scene - the screen turns black, and even the roll-back option doesn't help. Every time I try loading a previous save, the game keeps being unresponsive. The same happens when I try to save whenever I get the feeling the glitches are coming - suddenly I can't save, the UI stops working, and I have to close the game altogether. I read somewhere that the chosen electives might have something to do with this, but the game kept not working even when I changed them.
I'm glad you mentioned that! I forgot to mention the saves would glitch too so I couldn't use them. Yeah, I played completely differently stats wise for the 2 routes I tried and they both glitched like crazy. I also tried downloading and playing from both the app and from my docs folder. Same issues. :(