Would matter in pretty much any game where one player’s actions can affect the other player and position is important.

SA:MP back in the day had such shit netcode you had to shoot a significant distance ahead of a running player or nothing would happen to them. It was the shot receicing player’s client that had to detect the shot. In games where the server determines what happened to you, 100ms means there’s 100 milliseconds where you don’t even know you’re dead. That said, unless you’re playing competitive, 100ms is still borderline okay. Near 200 it’s horrible already.

Now something like a game of Civ? You could have an entire second and be OK.

To human perception a 0.1 seconds isn’t much different than 0.03 seconds

You are making the mistake of thinking about reaction times. What matters much more in shooters is that our brain adjusts for the ping. That affects:

• aiming with a lead of a few pixels. And in a fast moving environment, with skilled players, aiming for a lead of 30ms is absolutely a few pixels that can be targeted intentionally
• the time between triggering a shot (nerve signal to the trigger finger) and the last chance that the target has to dodge / change direction -> in such games, players are rarely running in a straight line, and more often running preemptive zigzag / evasive maneuvers even when not getting shot at. 30ms more ping means that on every shot taken, you lose 30ms from the window in which your target still moves in the direction you thought it was moving. Even if the target only changes direction only once per second, that’s 3% lost from the time window in which you can predict where to shoot. Actually more, because you have reaction time after a direction change, before you can even consider aiming.
• furthermore, when a player with low ping gets hit by non-instant-kill ammo, they will dodge within their reaction time. Assuming the attacker chain-fires, they lose 30ms of ammo missing the target before they can adjust aim or stop firing

the lama’s ass?

Yes, that little of a difference absolutely matters, proven by the observation that it went both ways. I could become the clear winner, or my opponent, based on who had the lower ping, whereas in equal ping settings the games were much more balanced. It’s easy to tell when you regularly play against the same people.

That’s how fast paced shooters work. Don’t think about the crap that people sell as “shooters” nowadays which is adjusted to playstation controllers or similar BS.

Think quake, unreal tournament, quake arena, openarena.

Mch stands for Machinist, a ranged gun class in FF14, and wildfire is an attack from said class that gets stronger the more hits you land during its duration. The max hits is 6, but enough lag and you can only get 5 of them off in the window. The game has a default 2.5 second global cool down between skills, though some gear and some skills can reduce that. In particular for Wildfire, you combine it with a skill that allows 5 hits of itself plus 1 other at 1.5s per cool down, but if you’re adding another .1 to each of those it can add up to miss unless very tight on timing.

Not a game breaker, but if you’re trying to push through your best performance because your group is failing at 1-2% you can’t really help not being mad at it.

Edit: in addition, the frustration isn’t you personally dying in some pvp, but your group of 8 friends you’re also holding back on fights. In addition to lowering damage, deaths can wear down your healers mp(and significantly lower your own damage output) so some tight mechanics can be harder to react, especially if your brain has you move wrong at first. None of these by themselves are terrible, but over the course of 3 hours working at clearing multiple fights it can wear you out and kill your enjoyment.