So I was playing SMB1 and I noticed this weird frame that looks like it was ACEd. Here is the image: https://docs.google.com/document/d/17Vx7BqG0oHp2U1_qhaR4xwshO13cc5OXq9v6lfYl8h4/edit?usp=sharing (Couldn't get the image on here)
It's a lag frame, there is no way to perform any type of arbitrary code execution at any point within the game currently, the game is just simply slowing down because there are too many moving objects on the screen at one time and the CPU can't handle it.
This image should also help visualize what I mean.
Effective immediately, any submissions using the SNES9x emulator will not be verified. The SMB1 mod team has concerns about its integrity due to its ability to overclock and remove lag frames, which may not be easily detectable. Additionally, we request that all BizHawk submissions avoid using the S