okay, so, i have been training the Katana Zero GE No Slow Mo run, and the thing is, how do i roll on "dropable" floors using down+move? I only fall down, and i need to roll everytime or else i will not get a faster time, like, Cherry Jam (the guy who holds the WR for my category) can roll on "dropable" surfaces even while using the mouse and keyboard, pls help me.

Bind button to roll (its Shift or Space on default)