Disconnection issue during combats.

Hi,

I'm experiencing a really annoying issue in TFT. Every single combat, excepting early-game ones, game client disconnects for several seconds and then reconnect. Everything works fine in carousel and other stages of the game but, when units are fighting I lose connection with the server. In addition, objects 'skins' dissapear after reconnecting, making difficult to recognize them.

Of course, I have hard-reset the router (several times), tried running the game in a clean install of OS (Windows 7 Pro SP1 btw), updated NVIDIA graphic cards drivers, a bunch of different graphics in-game setups and everything that I was able to imagine... With no result.

I don't think it is any kind software conflict since I have the minimum possible soft installed atm in my OS. Maybe I'm missing some important OS update? some .NET Framework, any library or Windows Update package? Otherwise, it may be a client bug. This didn't happened to me the last week.

I would appreciate any help or idea because it's really impossible to play this way :/

Thanks in advance.