I had a Netgear WGR-614 router that was capable of speeds up to 54Mbps. I recently upgraded my router to a Netgear WNDR 3400 N600. In all, I have 7 wireless devices. At any one point in time though, I have a printer, laptop, Roku player, and my desktop computer connected to the router. All devices operate in the 2.4Ghz band, even though the router can also suppprt 5GHz.
The internet speed I have is 20Mbps, and I get this speed when I run speedtest.net from my desktop (wired connection). When I run speedtest.net on my laptop, the speed I get is an average of 2-4Mbps. The speedtest peaks at 10 when it first starts and then drops to 2-4 for the remainder of the test.
The Roku player often loses the network connection and has difficulty reconnecting. Sometimes, it doesn't even see my network. Playing content on HBO has been difficult because it keeps stopping every five minutes to buffer content The Roku player isn't able to play content in HD.
I spoke with Best Buy computer personnel just to see what they would say, and they said something about how my Internet speed was getting cut in half. I have a router capable of 300Mbps but only 20 is going out. They recommended that I upgrade the Internet speed. The max speed available in my area right now is 50Mbps, but it will be getting upgraded to 100Mbps after the first of the year.
I don't know where I can relocate my router to where I can get a better signal, but the Roku is located in the front of my home and the router is located down the hall and in another room at the back of my home. I am considering upgrading my Internet speed, but I don't know if that is going to make a difference.