Random crashes even at the title screen suggest that your phone doesn't like the Ren'Py engine revision TM uses, so apart from updating that to a newer RenPy version in a future patch, I don't know to what degree I can improve this.
I was planning to give TM at least one more update, so this is something I'll definitely look into, I just can't guarantee it'll fix the issue.
Does "My Naughty Neighbor" or "Heroic Harem Resort" work equally bad, or does one of them actually run better?
They use newer RenPy versions, so knowing that might help figuring this out.