I moved the blade downstairs but am still having the wifi issue. Turn the wifi off, hash rate goes up to 13,000. Turn it back on, and it starts alternating between my two pools every 20 seconds or so at about a constant 10,000 mh/s rate (which is better than before, but still not optimal). I am stumped.
I've been having problems with my two blades for days. I just disabled the wireless on my router and everything started working perfectly, so I think we have the same problem. With the wireless enabled I can't even get the blades to return more than 2 or 3 shares to the stratum proxy. They'll hash via getwork protocol at around 5-6GH/s though. With wireless off they work great via stratum proxy or getwork. Leaving wireless disabled for any length of time isn't really an option for me though.
I'm using a Verizon MI424WR-GEN2 router, any chance that's what you're using?