Light Network issues

Having a lot of issues forming a light network on my Edge 830. I have two UT800s, two TL300s an RTL510 and a Varia Light Remote (for indicating and overriding). I can get all of them working together just fine on my Edge 130... but not on my Edge 830. Any more than three lights and it collapses. Everything is updated to the latest firmware... and I have tried all combinations of pairing the lights with the Edge 830 and the Varia remote. Any ideas? Or is the 830 just not geared for more than two lights?