One issue for me is, while its physically 64x64, code wise its 128x32.
i75 = Interstate75(display=Interstate75.DISPLAY_INTERSTATE75_128X32)
What I’ll probably do is go 64x32 and see what happens?
Thinking back, I was down this road before, scrolling text wise. My port / code is in this thread.
Interstate 75 with multiple HUB-75 LED matrix panels - Support - Pimoroni Buccaneers