Light Dash sometimes kill at low percentages. Saw someome kill a CPU at 29% though. WTF was that about?

It doesn't really matter if it's on a CPU, any kind of factors such as no di or poor recovery could come into play, or settings could be changed.

Anyways, while we're on the topic of the Light Dash, what are good setups and follow ups for it?

It's cool for punishing people that try to recover just above the ledge, and punishing whiffed tether grabs or laggy attacks. There are no true setups into it, but trying your luck with spindash>press jump when you hit>sideb or fthrow>sideb has a tiny chance of working at the right percent and DI on your side. There are no real followups because come on. Look at the endlag, and it puts you into freefall.

He means spam it until it hits which he does a lot.

Not no DI, bad DI: they seem to aim down whenever they are off-stage. Sonic's sweetspot in his light dash also has decent knockback at low percentages, but doesn't increase as fast as normal attacks do as the opponent racks up damage.

I could also see that kill happening if the light dash was unangled, and the cpu got hit with the part below sonic's head which would send it straighter and lower.

he spams it? oh ok

It's a joke dude lol

LOL!
Anyways does uptilt -> down tilt sound like a good combo starter?

I think on high or fast fallers, but not on the rest of the cast.

Maybe dtilt into utilt would be better.

You think light speed attack should work differently in beta or....

Yeah, that's the real bread n butter.
an example

I would just leave my computer if that happened to me...

I just discovered a while ago that Sonic can chain his homing attack with another recovery move, like the spring if you want to get higher, or the light speed dash if you want to get some horizontal movement. You want to use the spring if you get shot downwards with the homing attack. You can also chain homing attack and LSD (...), as there's a chance you will sweetspot the opponent.

The downsides are that if you do it too many times, it's predictable. There is also a chance you'll get launched away from your opponent with the homing attack. But other than that, it's much more efficient than using recovery by itself. And if you didn't jump before, you will get a extra jump in case something happens.

Well, that's widely known. But what isn't as widely known is if you're just below the ledge after a spring jump but are JUST off the mark, you can use the aerial down b to extend your ledge grab box a bit. Or, if you are really close to the ledge from the side but need one more little boost, you can use that little stall at the start of the aerial down b to your advantage and manage to reach the ledge.

Down air is really good for recovering from high up.