I gave up on this unit, finally returned it and stick with my existing Apple Airport Extreme, which perform much better than this new router, with my Airport Extreme it ran solid at 550 to 590mbps on...

The beta firmware did improve a little bit, I have to schedule the router reboot everynight in order to maintain arount 500mb.

I have the same problem as FrostFox, running the Beta firmware, the speed gradually dropped from 550 to 350, until I rebooted the router speed went back to 550, looks like this Beta firmware haven't...