Goes through the first 2 levels.
Rolling is the fastest movement option here so its done as much as possible, after a bit the roll loses speed and goes back to walking speed so it's better to cancel it midway through and start a new one.
Also, for whatever reason pressing B between the 2nd and 7th frame after pressing A to start a roll saves time, up to 6 frames per roll.
The second level looks like an autoscroller but it can be sped up by optimizing movement.
There's also a floor clip glitch that exists in this game, that the RTA WR does in a later level, and I got it at random in one of the ledges here, tho it wasn't useful, so hopefully that's a general use glitch and can be done anywhere useful.