Balance 305 throughput PPPOE


I recently bought a Balance 305 HW2 for the 1Gb throughput. After hooking it up and setting up my WAN port, I was disappointed by the speeds I was getting.

I am subscribed to a 1Gb fiber connection and I have confirmed that I get (~850Mb down / ~850Mb up) with a Balance 710. (PPPOE)

Using the Balance 305, I only get ~300Mb down / ~800Mb up (PPPOE)

I am not sure if this is a PPPOE limitation.

Any thoughts or solutions??