Titan EX is a terrible example to use for anything not just because of issues with server-client positional update lag, but also due to graphical lag as well. I have Coil up through T10 and all of the other EX Primals on farm and yet I can't clear Titan EX because Weight of the Land cuts my framerate in half and causes massive graphical lag that I can't always dodge even if I start moving as soon as the cast bar starts. There is literally nothing I can do about this-- I turn my graphics down to the absolute lowest settings and it still happens. There isn't a single other fight in the game that gives me issues the way Titan EX (and sometimes even HM) does. I've had other friends say they experience the same problem, some on PC and some on PS3. Most of them are also in Final Coil, so it's not an issue of "git gud." It's a legitimate problem with the way the fight is designed.