Ok, so I have no idea where this really belongs since I don't know if it is Axe doing it, just from assembly, or something else. But this has been bugging me for a bit and just haven't gotten around to asking until right now.
For the sake of this I'm just gonna suggest using the little program nemo wrote
here since I know it happens with it.
But when you run that program up to seven times in a row (without clearing the screen) until it looks like it shifts tiles upwards or part of them or something. It's odd but I just wasn't sure what was happening or if I'm the only one this happens to or what. If you want a screenshot of what I mean I can make one.
Thanks anyone who can help.