I've got BrightHouse Networks as my ISP. They sell 'Lightning', a 40Mbps service, which I use.
4 computers and the iPad are on the home network. 3 are hard wired. Using Bright House Networks Bandwidth Speed Test I test all 4 computers. All are showing over 38Mbps down and over 4.8Mbps up. Even the wireless connected computer, which is N and connects at 270Mbps is showing the same speeds. I tried the above site on the iPad but it is Flash based so I can't run it on the iPad. However I did get some speed test apps from the app store. The BEST speed I ever get is around 20Mbps down with 2Mbps up. Many times more around 10 to 12Mbps down with less than 1Mbps up. However, those are taken a good distance from the router.
I don't own the router, BrightHouse does and they manage it. They will reset any parameters I change it seems other than 'normal' ones I can set.
I've got the following Wireless settings in the Router (which I can change). See attached screen capture.
I've seen some internet posts that suggest the problems lie in the above settings. I've moved the bandwidth to the 20Mhz band, the sideband to lower, and the control channels have been tried on a few different ones. I know the 5.0GHZ shouldn't work. Still, even with those changes, the speed readings do not change much is any.
From what I can see, the iPad2 is running at 1/2 speed of the others on the network? Even when placed right next to the router?
WPA-PSK is the security that is running? AES is the encryption. WPA-PSK2 is available to be used as well (not sure why it isn't on?).
And idea or suggestions?