Thats good to know. 30 kbps is nothing. Is it normal to connect the cube to the wireless router, or does it have to be on the modem (I have a cable connection and am connecting my cube to the wireless router).
Definitely sounds like you have enough power.
I have mine connected to my wireless router, too. Are you having any problems with other devices while the Cube is on?
Some people reported that turning off the WiFi on their Android phones helped fix problems with their Cube. It's worth a shot...
I have been having some issues off and on with my CUBEs. I have 4 total and all of them would work great for a long period of time then out of no where start having problems and only running at about 4 GH. I came across this post and checked all of my cell phones. The one older android cell phone my little one uses to play on and watch netflix on was connected to the wifi. Once i powered the phone off my hash rates went back up and seem to be working again. both stratum proxys ( BFGminer and Slushpool ) both seem to be working again also. I by passed this issue by running a second wireless router to keep my wireless devices separated.