Untangle Gigabit WAN True Requirements

I have Untangle 10 installed on a MINX SOC (http://www.newegg.com/Product/Produc...37&SID=rewrite) with a 180GB SSD. I recently upgraded from 175/75 to 1000/1000 gigabit fiber, and Unangle is unable to handle the traffic throughput. I am attempting to identify if this is a configuration issue, or if this is a hardware PCI bus bottleneck. Currently, when I use the router provided by the gigabit ISP I get 920/920 average. When I introduce Untangle into the environment between my LAN and the Gigabit router the connection drops to roughly 330/330. Untangle is clearly the problem, but I cannot locate specific documentation.

Two questions, and if the answer to 1 works then 2 isn't necessary:

1) What configuration nuances should I be aware of to identify why I am being capped at about 300/300 of a 1000/1000 connection?
2) What are the exact hardware requirements for my 1000/1000 fiber connection averaging roughly 900/900 to work with Untangle 10?

Thanks!