I started playing this year and I'm loving the game, but this issue is very clear and I hope they can do something about it. I'm also from Brazil with 200+ latency, and even though this topic always brings Machinist to discussion, the clipping issues with high ping affects basically all classes. On Black Mage if you try things like Fire III > Enochian that will clip (Enochian changes in Endwalker will help that at least), on Red Mage 90% of the time it clips after using Displacement (even without any weaving), Dark Knight feels very slow single-weaving, and you need to use Salted Earth like mid GCD because before that it'll not even register the skill. Carve and Spit and the Dragoon jumps you also need to use early otherwise it can clip on single-weaving. The same for Bard, it feels much worse without double-weaving and late procs need to be dellayed to be used after the next GCD.

It's possible to double weave on a few skill combinations but you need to use them at the precise moment. I don't think the game is terrible with high ping, it's still fluid somehow, but after testing the noclippy plugin, it's a complete different world.

I think they should take a look at what noclippy and xivalexander do to see what happens with the game animation lock, and how they can implement a similar non-exploitable solution. Perhaps their internal test environment does not simulate this extra animation lock added by the latency, and could be the reason why they don't see the clipping issues.