i suspect the comments about input not getting recognized are because the movement/input speed is just very slow (or was for me). once i started pacing my inputs none of them were missed. however i think a faster pace would be nice (maybe as a hard mode?) because the slower pace forces you to think more. i think if you could move as fast as you wanted, there would be more room to screw up, and *you* would have to get yourself to slow down.
but maybe i'm wrong and i just got lucky with the inputs.