As a player from Brazil I also face the same issue. My average ping to NA servers is 170ms, and I’ve been wanting to play reaper, however, everytime I perform the void reaping/cross reaping combo, lemure’s slice causes clipping before the next skill. While this may not seem like a big deal it does causes issues in a fight. This tiny delay could potentially make you unable to do a finishing hit on a boss or complete the whole combo before a boss jumps into a transition phase. And as many have been commenting for years, it makes machinist not fun at all to play.
Unfortunately, after the servers moved to the west coast, the ping increased by a lot for more players than not, but even before that, ppl with more than 100ms already had this issue with ninja, but now we have it with other classes too since the implementation of these 1.5s gcd skills, alone with the ever present double weaving incapability even with as much as 2.48s gcd, as a summoner for example.

I hope this will be acknowledged soon, as more and more people seem to be moving towards third party software that could potentially be harmful to fix something that’s been overlooked for so long.
Having played other mmos, I have not experienced this issue before FFXIV, even with lower global cooldowns than in this game, so I can, with all confidence say it’s not a connection issue, but rather an issue with the delay being built in the game.