Game disconnect

[falconte7767]

I get disconnected from the game at least once a day. It says the game files were not found, then I restart the game through steam and sit in steam library launching the game with "downloading game content" phase. It keeps trying to download something for like 5-10 minutes. After download is complete (baring in mind there is no update) so I don't know what is it updating, I get back in the game but I cannot play next game because I am getting banned for disconnection I assume.
Anyone knows how to fix this weird "game file are not found" disconnection issue and not be banned everytime?