Tips on Quick Mudra Inputs!

[Razzle]

It sounds like latency. Just like gathering: If you gather in the same spot as another player, you'll notice you both have a different pace (people are gathering faster than me even when I spam 0 non stop.). The one with good latency will have more hits done during X time.
But it's really like anything else in this game, or online games I guess, if you have better latency you basically have an easier gameplay than someone who doesn't

Skills are client sided, the server realizes you cast a skill much after it started. (and you'll notice that during a lag spike, as long as your skill is not blank, you can cast ti and see the whole animation, but the numbers on your target won't appear until after the lag).

So Mudras should work the same, which means that after hitting your mudra, although you see the animation, it still didn't register to the server, and therefore people with bad latency will take longer to combo, not only Mudra, but any instant skills (and non instant ones as well).