Saves 1 frame at the end of bank 1 but loses time to luck in Bank 3. I could just intentionally delay entering the door a frame but then I'd just come out even. Uploading in case anyone ever happens to find another frame before then.
Saves 10 frames at around frame 10670. Also incorporates Arc's improvement at the beginning of the game and my other improvement. Causes RNG to change so it desyncs on the next screen, but this seems worth investigating further.