I tried finding an OOB in 0-4 on current patch, but I don't know if it's optimal. I posted it on YT, so you can see it. I don't know if it is optimal for runs on current patch, because the inbounds level is already quite optimized, but the clip allows for an ultraboost, so that compensates for the time it takes to get OOB.

Anyways, here is the video: