I found that using Non L+R fast accel in 1-1 can save like a framerule + optimal FFPG at the end. I optimized 1-3 with with a faster route than what I had in my other run + Non L+R fast accel but I am unsure whether or not if it actually saved the framerule since this time is only .4 seconds faster than my previous human theory. I also saved a couple frames in 8-4 with faster routing.

I think this is the fastest time humans can get in this romhack without some new time save found somewhere. If there were to be a time save I think the most likely place it would be in is 1-1 since I think it is possible to clip into the wall at 0:13 which might save a few frames then wall jumping up. This is quite hard though due to a very annoyingly placed 'fly block' but I think it is definitely possible, but I haven't been able to find a subpixel where mario can clip into the wall. I'll keep looking though.

*this is the description of the video but I think it fits here too.

I've pretty much concluded that sub 2 is impossible but maybe sub 2:01 is possible. I don't really know though.