I'm currently unable to record or livestream because my computer is borked, but with some new strats I managed to get a PB of 1:35.80 on a somewhat sloppy run. If done to perfection, a low 1:35 is 100% possible. Sub 1:35 won't happen unless we find some sort of crazy glitch - I've found a way to teleport short distances, but it doesn't appear to have too much potential.
Update to this: I strongly believe that with the absolute perfect run, although just barely, one could get a sub 1:35. There are a few spots where you can save the necessary time (notably the OoB trick in Level 4, if you can pull it off absolutely perfect, you can save about .25 seconds compared to my PB if my gold split was not wrongly timed). Like I said though, it would require a completely flawless run. But I think it is a possibility.