Help Me Optimize my Asus RT-N66U Dark Knight Router

Just switched over to AT&T U-Verse and dumped my ancient D-Link Gamer's Lounge wireless router. I grabbed the Asus Dark Knight based upon all of the GWJ recommendations, but I must be doing something wrong. I have 45mbps DL and 5 mbps upload to my hard line desktop, but my wireless devices are getting 10 mbps max. Even when I'm sitting at the computer running the wireless test. I've run a few speedtest apps on my iPads and iPhone 5, and I consistently get only about 9-10 mbps. What optimization tweaks am I missing here? I have both bands on the same SSID.

I don't know if it's universal for all routers or not, but with my Linksys, I was getting similar results (well actually, maybe not quite that bad...) until I separated the 5GHz band onto a different SSID. The problem is that, even if I was sitting right next to the router, my PC still would prefer the 2.4GHz band.

Have you run inSSIDer to see how dense your wifi airspace is?

First, have you updated to the latest firmware?

merphle wrote:

I don't know if it's universal for all routers or not, but with my Linksys, I was getting similar results (well actually, maybe not quite that bad...) until I separated the 5GHz band onto a different SSID. The problem is that, even if I was sitting right next to the router, my PC still would prefer the 2.4GHz band.

I've run into something similar, and that was the first thing I was going to suggest. (And I've got an Asus RT-AC66U.)

Yes, I have updated the latest firmware, but doesn't putting the 5GHz band on a different SSID defeat the purpose of the dual band feature? I live in a townhouse with six units in my building. Lots of wi-fi cross over. I thought the dual band feature helped get you the strongest signal?

Well, what I do on mine is to have separate bands, and I configure all my devices to talk to the fast (5GHz) one first, and then the 2.4GHz one as a fallback. This seems to work fine; I get excellent speeds.

So what you're saying is that if I have both bands on the same SSID, my iPhone will connect to the slower band first?

Also, in the ASUS set up screen, there's something called the QoS (Quality of Service) Traffic Manager. It is a good idea to turn that on, or leave it off?

Update: So I changed my SSID for the 2.4 band and my phones are connecting to the 5 band, but I'm still getting the same download speeds of 7-10mbs.

It just seems ridiculous. I ran the speed test at my parents house where I put in an old Netgear N300 two years ago and I was getting 20mbs on my phone. Arrgh, so frustrating!

Second Update. Turned off the QoS for the hell of it. No difference. Still maxing at 10mb/s downloads.

I had a similar issue. I ended up switching the firmware to merlin and my wifi speed issue went away. I also keep separate ssid for 5(ghz) band and 2.4 band. I think there is an issue with the standard asus firmware.

merlin firmware: http://www.mediafire.com/asuswrt-mer...

guide to tweak the merlin firmware on dark knight.

http://blog.ittoby.com/2013/01/setup...

You can download wifi analyzer apps for Android and iOS. I used one to resolve issues on the home wifi setup. Turned out that my router was using channel one of 11, along with about eight other routers within range of the house. Switched to channel 11 and noted significant improvement. This is on a six year old Netgear router, so your mileage may vary.

drewblood wrote:

I had a similar issue. I ended up switching the firmware to merlin and my wifi speed issue went away. I also keep separate ssid for 5(ghz) band and 2.4 band. I think there is an issue with the standard asus firmware.

merlin firmware: http://www.mediafire.com/asuswrt-mer...

guide to tweak the merlin firmware on dark knight.

http://blog.ittoby.com/2013/01/setup...

I just checked the ASUS website out of curiosity just now and they seem to have implemented some or all of the Merlin firmware features in a firmware update that went live a few days ago. I was running the default firmware prior to that iteration without any problems, but I'll have to update again tonight.