Attempt to load balance @Edinburgh airport

While I was travelling back from Sweden to Edinburgh I saw a sign that prompted me to use the E passport gate. I thought to myself to do an experiment when I would arrive at the passport gates and select the e passport gate to see if it would be quicker.
At the passport gate there were 5 e passport gates and 7 normal gates. I clocked I guy going into the normal gates and watched him (in a non creepy way) to see who would "win the race".
As I made my way in the que I found a few problems with the E passport gates which was slower than the normal gates.

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1. There were some echnical difficulties - some of the gates had error on them.
2. There was an employee that  was supposed to be helping people at the machines that made the erros but instead he was more of a traffic controller. People did not move to an empty ready gate because the "traffic controller" had not told them to go there. This resulted in the que stopping if the "traffic controller" was helping someone else. When it was almost my turn the women in front of me did not want to move to the empty gate even though I gently nudged her and told her it was free.
The experiment finished with the man going in the normal que finishing long before me - ok 5 minutes but that is long in the passport gate que :)
I think if they might have clearer instructions for passangers using those gates it might be better or encouraging frequent flyers to go there to start with ;)