They don't change the margin of error, they physically make Ryuuta go a little bit faster than he should go with DT, and a little slower in HT. With DT, I've noticed that for some really difficult jumps without DT become as difficult as any other jump in the map with DT. And in HT, with Ryuuta's sluggish speed, there are some fruits that you can't walk, which you can without HT.Shiirn wrote:
What non-seasoned catch the beat players do not realize, is that halftime and doubletime have a very special bit of coding in them. They decrease or increase the margin of error within hyperfruit coding.
Even if I were wrong, I think I remember a long time ago that MM201 said something about the hyperdash code being... really complicated... or something. Still though, lots of support on this.
You may also want to see viewtopic.php?f=4&t=56606 because it also involves reworking a mod's effects (in terms of AR and circle size), so you can fine tune your suggestions.