Originally Posted by drew64
Came across this thread and hope I can get an answer to complicated question. I have verizon DSL and recently have had some issues with slowing down on my home network. Now I have a lot of wireless clients like iPhones , ipad, Apple TV, laptop, networked dvr and a desktop which is wired in. I get about 3 Mb speed. My problem is when 3 people are on the network at once trying to either play a game online and also stream a movie. Everything slows down. Even just surfing the web. Had verizon test line and it's fine. They are sending me a new modem since mine is 10 yrs old. It is a westell c90. Think getting an actiontec. I have an apple AirPort Extreme N compatible. I was looking into this router being triband. Would changing up the router make a difference in not having the network bog down when multiple people are on it. Can't get fios here and don't want to switch to optimum. Always has problems here. Would changing DNS to google servers or open DNS help at all.
Just gotta troubleshoot it one possibility at a time. First are you on newest firmware?
If so, then as a starting point figure out what your real world max possible speed is: Connect a computer directly to the modem (take R7000 out) with an ethernet cable and without anyone else connected at the same time. Download a very large file, like an operating system .iso or something (say at least 250mb to get a good average value). You can also do the speedtest.net and similar sites, but many ISP's game those by putting a burst of higher than average speed at the beginning of downloads so the test will give flattering results.
Anyway, that is your max possible speed. Now put the R7000 back in and do the same thing with a wired connection to the R7000 and see if you still have the same max speed. Then add multiple wired connections each downloading big files or watching Netflix or something. If that doesn't replicate your problem then finally do it again with a mix of wired and wifi connections, and finally with all wifi connections - this at least establishes that the problem lies in wifi not anywhere else.
Make sure wifi settings are as fast as possible - for example don't enable g if you only have n devices. Use the 5ghz band to the extent possible - it doesn't have good range but it's much faster than 2.4ghz. Make sure you are not on a bad channel with a lot of interference. An easy way is to get an app such as inSSIDer and walk around with your phone. Change channels if it's too crowded - the app will suggest the best one.
You could be creating your own interference too if you have a whole bunch of devices - don't use wifi for things like desktop PC's or PS3's or media streamers that are fixed in place and could be wired (powerline adapters work well for this stuff).
Another possibility is QoS. If it is on and you're having the problem, turn it off. If it is off, turn it on and set it up according to your needs.
Anyway that is at least a start to narrowing down the problem. But yes, R7000 should be capable for providing way more than 3mbps to 3 devices simultaneously (assuming your max possible speed wired to the modem is well over 20mbps+). You're always limited by the slowest link in your connection, so you just gotta identify what that is first.
edit: No, changing DNS servers shouldn't help/hurt download speeds. That only affects the time it takes to initially connect to a URL.