My slow load times in FFXIV drove me crazy so I looked at my network traffic using a network protocol analyzer called Wireshark. Instead of helping me find potential problems, it actually eliminated my slow load times. AFAIK it's a diagnostic tool so the result was unexpected. FFXIV is now crisp and responsive.
Up until today I have had slow load times loading FFXIV after character selection. It was normal to wait 3 minutes to actually enter the game but now it seems almost instantaneous. A friend of mine without the slow load times tried it out and reported that while it didn't help his load times, he noticed a significant increase in the crispness and responsiveness in combat.
Whatever the issue I have this program is doing something that eliminates/mitigates the problem. Does someone have any understanding of networks that can help me figure out whats going on?
It seems a bit better right now if I close Wireshark, and restart FFXIV without Wireshark, FFXIV isn't as laggy as it had been (maybe a bit slower, but not by much).