a small very glitchy proof of concept mod. turbowarp only. turbowarp.org/1250775672 time speeds up when you move the mouse or press a key. I saw the GAME SPEED variable and had to try this.
the particle trail on the end of the particle blade is just there to show how fast the blade is moving so you can tell even when time is super slow. thanks to @Pocolilman for making a game with a time control variable.