Playing Heroes of Might and Magic V on Ubisoft servers.

I didn't like the game on Ubi; I can't play it there. I tried playing via dial-up, but it lagged and crashed in the lobby. I tried using a USB modem, and it lagged less, but it still crashed. I thought that if I got a satellite connection, I would be able to enjoy the game. I tried it, and it didn't lag, but it still crashed. :( ADSL was not available, so the only way to play without problems is via a dedicated line. If anyone can suggest anything, I'd be happy to try it. I noticed that, strangely, after a crash, if I move around differently, it doesn't crash again. If I play the same way, it crashes. I haven't found anything interesting on other forums, except for playing via Hamachi. That's pretty much all I think about Ubi.