Thank you for the reply Sumerechny.

When you say you are using a different ISP with no issues, are you at a different location? Are you still using the PC or router?

If you are experiencing a routing issue with your ISP, a VPN may route you around any potential issues, but this is not guaranteed to work depending on where exactly the issue is.

As for optimizing your network, you can try some of the following if you haven't already:

1) Try resetting your router by turning it off, then back on after a few minutes.

2) Make sure your anti-virus has the proper exceptions for Final Fantasy XIV. This includes the install folder and the locally-saved data folder (located My Documents > My Games > Final Fantasy XIV).

3) Try a clean boot. Simply open the task manager and select the 'Start up' tab. Disable everything here and restart the PC. This will make sure that no background processes are interfering with the game.

4) The game will use the Internet Explorer web browser to connect to the internet. Open Internet Explorer, then open the "Tools" setting, go to "Internet Options" and adjust the following settings:
- Under the "General" tab, please delete ALL browser history.
- Under the "Security" tab, please move the slider to the lowest possible settings or no higher than "Medium"
- Under the "Privacy" tab, click “Advanced” and select ‘Accept’ under both First Party and Third Party Cookies.
- Under the "Advanced" tab, please make sure that "Allow software to run or install even if signature is invalid" is CHECKED.
- Make sure that all SSL and TLS (EXCEPT SSL 3.0) are CHECKED. [SSL 3.0 should be UNCHECKED]
- Hit "Apply" to save the settings, and then "OK, to close the Internet Options menu.

We hope we can be of assistance in helping you enjoy the exciting world of Final Fantasy XIV!