I'm beyond frustrated with Square Enix regarding this issue. At least in my case this is pretty much 100% confirmed to be on SE's side and it's due to bad routing from their servers to certain ISPs.
How do I know this?
- I currently play around 5 other online games and I average a 25ms ping on all of them.
- This problem started two weeks after release when they "upgraded" servers in order to allow more people in.
- I called my ISP multiple times regarding the issue while sending traceroutes and ping logs to them and they could not pinpoint the problem.
- My ISP doesn't throttle unless they find illegal cookies, which I'm sure SE doesn't use.
- I have a high end ASUS RT-N56U with a wired connection to my Gaming PC, I've also tested it without a router and a direct connection to the modem to no avail.
- I recently upgraded my internet from 25 Down/5 Up to 50 Down/10 Up and it made no difference. Here is a speedtest:
http://www.speedtest.net/my-result/3043629367 and here is one to a Montreal Server where SE's NA Servers are apparently located:
http://www.speedtest.net/my-result/3043632762
- I don't drop packets or get ping beyond 150ms.
- Playing this game on a VPN where I would first connect to an LA server and then to SE's servers which severally lower's my speeds and given me less lag and better results.
- Changing ISPs to Century Link, a DSL provider that provides worse service, is known to throttle, and gave me less speeds at 40 Down/5 Up gives me zero lag.
- Finally, the biggest evidence against Square Enix is that I can connect to JP servers right now and get zero lag. My connection on the Character Selection Screen also displays as "Excellent" as oppose to the "Good" I receive on NA servers.
It's funny because the last time I called Cox Communications, my ISP provider for the last 10 years regarding this issue, I was able to actually speak to a tech representative who also plays FFXIV and he says he receives the same problem, while another friend of his who also uses Cox but lives in LA doesn't.