1A per USB port may not be enough to run them at 500
The Sidehack USB hub provides up to 6A per port (shared between two ports)
No, 1A will never work with these. I tried with a 2.4A hub and it didn't even get above like half frequency; however these sticks are made for OC and run especially bad at lower frequency, so hashrate was abysmal. Changing to a GekkoScience hub immediately fixed it.
I don't think that these sticks can even get 2.4A out of 2.4A hubs, because they only deliver the power when the device requests it through some USB spec messages that it sends to the hub - something that mining sticks don't do.
how many sticks do you have on your GekkoScience hub? 1 stick between the 6a ports?