RT-AC68U Problem. Slow WiFi

[Wiik]

Hey!

Ive just bought a new ASUS RT-AC68U router. Ive installed at my parents house and afterwards I tested it on SpeedTest net. The speed was 100 mbps wired and 100 mbps wireless on my ASUS laptop. The iPhone 6+ got 13 Mbps. The next day when I did a SpeedTest on my laptop I got 30-40 mbps wireless but still 100mbps wired.

Took the router to a friend who lives in a apartment building with alot of other wifi networks around and plugged it in and did a SpeedTest. 100mbit wireless on laptop and 100mbit wireless on my iPhone 6+.

Took it back to my parents house wich has like 2 - 3 other networks around it and the speed is still slow on my laptop and iphone. Still delivers 100mbit wired so do anyone know what the problem could be? As soon as I use at my friend it works 100% and when I use at my parents house it only delivers 30-40 mbps.

Still delivers 500-600 mbps wireless file transfers in the network.

5Ghz wireless speed: 30-40 mbps
2.4Ghz wireless speed: 20 mbps

My parents ISP: Telia 100/10 fiber
My friend ISP: Bahnhof 100/10 fiber

 

[L&LD]

There are too many variables to consider here.

What firmware are you running? What changes past the defaults have you made? Any extra features used on the router that you've enabled? Have you flashed a newer (or older) firmware than what it shipped with? Did you do a reset to factory defaults afterwards?

 

[gatorback]

Remove the ISP from the testing and start with wired connections. Use a large file (>1GB) and copy it from to a wired PC.

 

[Puppa]

Have you checked which frequencies are in use and the signal strengths of the neighboring access points?

Sent from my SM-N920V using Tapatalk

 

[Wiik]

There are too many variables to consider here.

What firmware are you running? What changes past the defaults have you made? Any extra features used on the router that you've enabled? Have you flashed a newer (or older) firmware than what it shipped with? Did you do a reset to factory defaults afterwards?

Ive used the latest ASUS firmware and latest Merlin firmware. Even older ones. Ive done like 10 hard resets, no success.

Remove the ISP from the testing and start with wired connections. Use a large file (>1GB) and copy it from to a wired PC.

There is no problem with the internal wifi? Got 600mpbs wireless transfers.

Have you checked which frequencies are in use and the signal strengths of the neighboring access points?

Sent from my SM-N920V using Tapatalk

Im alone on my 2.4ghz and 5ghz channels. I got 40-50 signal strengths and my neighbours wifi got like 80 signal strength.

 

[TheManFromUncle]

Wiik, as environments can make a huge difference, tell me, did you have the router right in-front of you during both of the tests?

 

[Wiik]

Wiik, as environments can make a huge difference, tell me, did you have the router right in-front of you during both of the tests?

Yes, exactly the same. This is really weird.

 

[gatorback]

My suggestion was to verify that wired speeds work as expected. After wired speed meets expectations, then try wireless: the problem with wireless is that in many areas 2.4 GHz is crowded and 5 GHz is following suit. This is true even if the router is right in-front of the test device.

 

[Wiik]

My suggestion was to verify that wired speeds work as expected. After wired speed meets expectations, then try wireless: the problem with wireless is that in many areas 2.4 GHz is crowded and 5 GHz is following suit. This is true even if the router is right in-front of the test device.

The wired connection is going full speed. The 2.4ghz and 5ghz is not crowded. Is there other things that could be in the way like cordless phones, microwaves etc?

 

[gatorback]

Theoretically no, because they have been tested to stay within their own band. That being said, if you turn off all the suspects then you might be able to isolate the offendor.

 

[john9527]

The wired connection is going full speed. The 2.4ghz and 5ghz is not crowded. Is there other things that could be in the way like cordless phones, microwaves etc?

Older cordless phones and baby monitors have had impacts reported in the forum. There was also one where using a cheap HDMI cable for a monitor next to the router killed wireless.

 

[wardog]

The below found HERE .

Try the following:
(1) physically turn off the router
(2) press WPS button and keep it pressed
(3) turn the router on with WPS button pressed for 5 sections after router powers on
(4) release WPS button

 

[EsTeTicu]

Any news on this one? did you even solve it?

I have the same problem, wifi download is limited at 65 Mbps while upload works at full 93 Mbps. On wire I have full speed for my contract 100/100. I have no custom settings besides PPPoE and SSID names and password.

 

[RMerlin]

Try the latest beta firmware from Asus (9.0.0.4.380_26xx). It contains a fix for wifi issues specific to the RT-AC68U/P.

 

[EsTeTicu]

Ok, I just tried 2695 and it's the same

In the changelog of the beta it says fix 2.4 wifi with disabled NAT acceleration, but for me it is enabled and I have the same problem on 5 GHz too.

I tried testing with iperf, LAN - Wi-Fi works also, I get 427 / 357 Mbits/sec, so it's not the wireless, something is wrong with WAN routing, but I can't understand what.

 

[L&LD]

Ok, I just tried 2695 and it's the same

In the changelog of the beta it says fix 2.4 wifi with disabled NAT acceleration, but for me it is enabled and I have the same problem on 5 GHz too.

I tried testing with iperf, LAN - Wi-Fi works also, I get 427 / 357 Mbits/sec, so it's not the wireless, something is wrong with WAN routing, but I can't understand what.

Did you do a reset to factory defaults afterwards?

http://www.snbforums.com/threads/no...l-and-manual-configuration.27115/#post-205573

 

[EsTeTicu]

Yes, keeping WPS button pressed while booting up, also with the reset button, nothing helps unfortunately.

 

[L&LD]

Just to be sure, you are not using a backup config file after resetting to factory defaults?

 

[bluepoint]

I have the same problem, wifi download is limited at 65 Mbps while upload works at full 93 Mbps. On wire I have full speed for my contract 100/100. I have no custom settings besides PPPoE and SSID names and password.

Make sure you're running with wide band(40 or 80 MHz) and using the cleanest channel. I have the same service 100/100 and I'm getting 99/122Mbps from Merlin's .58 firmware. Possibly, you need adjustment with your mtu too.

 

[EsTeTicu]

I'm not using a backup file, since I just enter the PPPoE username and password and set the SSID names and password for wireless.

I can see on my mac that it's using 80 MHz on 5 GHz, but that can't be it, I tested download speed from my LAN NAS and it's working with full speed over wireless, 400+ Mbps.

I have no other networks around me, so even on 2,4 GHz, 20 MHz I get this:

On cable it works as it should, I get full speed of my contract. I'm afraid the unit is defective, but the fact that wireless works fine from LAN makes me wonder...