This error disconnects me from all other players in the match. It seems to only happen after about 35 minutes of gameplay which makes it extra annoying. I'd estimate this happens maybe once every 10-15 matches.
The corresponding error messages in the log seem to be:
info: CNetTCPBuf::Flush(): send() failed: WSAECONNABORTED
info: CNetTCPBuf::Write(): send() failed: WSAECONNABORTED