Your best bet is to setup multiple dedicated servers in different data centers to deliver content for specific geographic regions.
We have data centers in NY and Amsterdam - allowing you to reach the two most important customer bases USA + Europe.
All that you'll need to do is setup the stream to relay to the NY + AMS server and then have your viewers connect to either or. You can use mod_geoip to target which server they reach or even allow them to select US / Europe via HTML links.
www.RealityCheckNetwork.com +
www.RealityCheckNetwork.nl