Nope. We tried a whole lot of things and it never got higher than what you were seeing. I got 900 something routing through it on my internal network Laptop - Gig switch - SG-1100 - Gig Switch - Second laptop
But the second it hit the cable modem to the internet throughput got cut in half.
I'm still waiting for further firmware/software updates. I haven't looked in a few weeks to see if there has been anything new.
But to be fair, the second i use the device for its real capabilities and not just a dumb but good firewall/router like the edgerouterX, it's throughput is what i would expect it to be. And it's plenty for nearly all typical use cases for it's price point.