Slow wifi with DD-WRT Kong version 23250

4 posts / 0 new
Last post
Mon, 12/30/2013 - 3:28am
#1
techguy378
techguy378's picture
Slow wifi with DD-WRT Kong version 23250

I decided to try the newer Kong version of DD-WRT. I have a late 2013 Macbook Pro with retina display that supports wireless-AC. After I flashed the ROM my wifi downstream speeds dropped to 172mbps despite having the 5GHz radio set to wireless-AC only. I had the channel number set to Auto. I tried setting the channel width to Auto and even manually forcing it to 80MHz but my downstream speeds never got above 172mbps. I switched back to the latest Netgear stock firmware and my downstream speeds jumped to 702mbps on the 5GHz band. My internet download speed through Comcast jumped from 49mbps on Kong DD-WRT to 69mbps on Netgear's stock firmware too. Is this normal with Kong DD-WRT?

Top
Mon, 12/30/2013 - 7:01am
Permalink
Kong
Kong's picture
No this is not normal,

No this is not normal, example settings, see:

http://www.dd-wrt.com/phpBB2/viewtopic.php?t=177443&start=780

As for a Macbook Pro, I know it does around 400Mbps real throughput not just connection rate.

So maké sure you have setup settings as in the above thread you may want to raise txpower up to 999mW for 5G band, depending on your distance. Also for AC/N wireless security requirement is WPA2-AES

Top
Mon, 12/30/2013 - 1:59pm
Permalink
techguy378
techguy378's picture
Yes, I'm using WPA2-AES. The

Yes, I'm using WPA2-AES. The only difference in the settings between firmware settings is likely TX power as that's not in the stock firmware. I tried setting TX power to 500mw. No change in downstream speeds. Didn't want to set it higher because CPU temp was just over 60°C. What TX power setting does Netgear use in their stock firmware?

Top
Tue, 12/31/2013 - 7:26am
Permalink
Kong
Kong's picture
techguy378 said: Yes, I'm

techguy378 said: Yes, I'm using WPA2-AES. The only difference in the settings between firmware settings is likely TX power as that's not in the stock firmware. I tried setting TX power to 500mw. No change in downstream speeds. Didn't want to set it higher because CPU temp was just over 60°C. What TX power setting does Netgear use in their stock firmware?

They set it to maximum output power:

 

 wl -i eth2 txpwr1
TxPower is 127 qdbm, 31.75 dbm, 1496 mW  Override is Off

 

But as only 1000mW are allowed in 5G, the driver limits it to 1000mW. 60° is nothing for these passive cooled chips. But setting it high if you are only meters away is really bad. Not sure if the mac also has settings like maximum output power, my intel 6300 default to medium output power, when I change this under hw setting to maximum my transferrrate doubles.

Top