I have had this happen to me on almost every run i've tried, after load warping from the fusion reactor in the institute I try to fast travel back to the railroad and it says "fast travel is currently unavailable from this location" does anyone know why? thanks :) 1:03:00 for reference.

yeah we call this mikulocking. we don't 100% know the cause, but we think its linked to either doing the railroad/teleporter/institute splits. pretty much just keep practicing and overall youll get to the point where you dont get mikulocked and you get a nice juicy pb. dont look at a mikulock as a thrown away run, look at it as a run where you were able to practice everything and improve.