Delay between Client and Server.

[ZohnoReecho]

What I posted shows the latency with each node you go through to reach the final server.
Open the command prompt and type (without quotes) "tracert 199.91.189.42"

If you want the real time latency you can
1. WIN + R
2. type "perfmon /res"
3. click "networking" tab
4. check "ffxiv.exe" from the processes list

you'll get something like this with IPs, doors and latency:


If you are the only one lagging in an instance it probably depends on your connection with the server. That doesn't mean that the ISP or SE fault for sure, but it's possible that a node in between is causing lag.
Of course while playing stop anything that could even slightly slow down your connection, like torrent or YouTube, even if they are running on another PC. When my brother opens a video I can even get 1s lag. Sadly Fastweb's (or any other italian ISP :/) upload bandwidth is really low and can cause issues.