Is this clip fast enough for lightning 4-2?

No. You even missed it by 10 frames in that video.

(A TAS warp zone with L+R could probably save the FR with that underground section, however)

It's not new. It's actually the 1st ever TAS way of wrong warping found by Mana in 2004. Many runners have done it RTA since

Either way I think that's a known clip.....

Lmao @WolfAttacK I said the same thing SECONDS after you lmaooo

Lol

OK thanks