Fastest dark room strat with dashmaster - extra dash after the big jump saves ~0.2 and imo makes the room a bit easier. Starting with neutral dashes is like a couple frames faster by my timing and is also easier. Go neutral for part of the big jump before the extra dash, and if you're too far right then go neutral for a bit of the double dash after. I included 2 diff starts, both are the same speed but one gets a free hit of soul (but is maybe harder to position)