RJ,
OK now I have completed the Vixen test.
I created a 15 second sequence with the following configuration.
Lynx E1.31 output 4096 channels. 50ms intervals
Channel 1 turned ON/OFF for the full 15 seconds.
Channel 3585 - 3592 arch rolls with varrying speeds outputting DMX to a Lynx Express.
I also built an LSP file that did exactly the same as above.
Both resulted in jerkey output of the e-dongle.