Racket really isn't that slow
It's certainly slow enough not to be an option for any demanding game, and certainly not on a console.
and the ND games that used it weren't anywhere near as CPU or memory constrained as those using GOAL/GOOL
You might want to go look at ND's talk on how they parallelized the engine to make it run at 60fps to get an idea of just how constrained they are, CPU and memory wise, even to this day.