And.

Quoted from JamesTown
“More than likely the reason for this is due to the Pre-Query Filter breaking in last patch. The button still works, but it doesn't default to *ON* nor does it remember the value you last selected, so in the mean time (until the next patch) you will have to select the checkbox manually each time you start the client. Normally the filter is turned *ON* by default, so even those who are not familiar with what it does would be benefiting from the functionality it provides but for those who are unfamiliar with it I will explain a bit.

When someone requests a game list from the master server without the Pre-Query Filtering enabled, your client is telling your master server that you want a listing of every single server that is currently not in game but eligible for players to join the game lobby. What this equates to is during peak hours, you are requesting the master server to send you a list of 500-800 servers, which comes out to between 500-700K of data that you need to download in a short amount of time. If your connection is unable to download this and times out, you won't see any games listed. If the filter is *ON* your client tells the master server to ONLY send the servers for the specified region you have selected. This means you download a server list normally between 50 and 250, instead of 700 so it's much faster to refresh and much better suited for higher latency or slower download connections.

The filter will be fixed next patch and you should see this problem go away. “

I personally haven't had this issue, but I'm from the US.