I have found that if you are using the TeamSpeak overlay plugin it can cause issues when playing this game. If you are receiving a client is not responding error a few seconds after entering a match and are using the TeamSpeak overlay plugin this could be what is causing it. All you have to do to fix it is deactivate the plugin by opening TeamSpeak going to Settings → Plugins, uncheck the box next to TeamSpeak 3 Overlay plugin, and click the Reload All button and you should be good to go. Hope this helps some of you that are having problems.