Extremely poor wifi signal and quality

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dan801
DD-WRT Novice


Joined: 03 Mar 2017
Posts: 26

PostPosted: Tue Dec 18, 2018 20:35    Post subject: Extremely poor wifi signal and quality Reply with quote
Wrt1900acs v2. I’ve been having long time ongoing issues with both wifi signal strength and signal quality.

Issue is on both 2.4 and 5ghz

Even 4 feet from the router my devices are showing 34-50 % quality. With clear sight. If I’m in another room even adjacent to the router I get almost no signal from either. Router is in clear open space

I was using r31924 up until recently but started getting drop out of the 2.4 signal and WAN dropouts. Changed to r37961 last week and no change.

I have no network channel interference from Neigbours. Tried adjusting channel width and tx but no changes.

Average signal strength is -80, noise -100 across the board, SNR between 15-40

2.4GHz
ModeAP
NetworkN-Only (2.4 GHz)
Channel11 + 7 (2462 MHz HT40)
TX Power30 dBm
Rate600 Mb/s

5ghz
ModeAP
NetworkAC/N-Mixed
Channel149 + 153 (5745 MHz HT40)
TX Power30 dBm
Rate600 Mb/s
Sponsor
BobbyLee
DD-WRT User


Joined: 04 Jul 2016
Posts: 131

PostPosted: Tue Dec 18, 2018 21:14    Post subject: Reply with quote
How does it perform in comparison if you load up the Linksys firmware? That's how I determine if it's a DDWRT related issue or something else. From around r35898 to r370?? DDWRT WiFi would drop all the WiFi devices while the Linksys firmware had no issues dropping devices.
_________________
Linksys WRT3200ACM
Currently using Linksys Firmware until DDWRT lets my ObiTalk 202 complete calls when connected via WiFi
Last used DD-WRT Version: r38326
OpenVPN server
dan801
DD-WRT Novice


Joined: 03 Mar 2017
Posts: 26

PostPosted: Tue Dec 18, 2018 21:20    Post subject: Reply with quote
BobbyLee wrote:
How does it perform in comparison if you load up the Linksys firmware? That's how I determine if it's a DDWRT related issue or something else. From around r35898 to r370?? DDWRT WiFi would drop all the WiFi devices while the Linksys firmware had no issues dropping devices.


Manage to override the stock firmware and can’t seem to get it back (been trying)
BobbyLee
DD-WRT User


Joined: 04 Jul 2016
Posts: 131

PostPosted: Tue Dec 18, 2018 21:28    Post subject: Reply with quote
dan801 wrote:
Manage to override the stock firmware and can’t seem to get it back (been trying)

Is it still in the other partition or did you manage to put DD-WRT in both? If it's in both 'from what I have been told on this forum' you should be able to just load the current Linksys firmware from the DD-WRT Admin/Firmware Upgrade page. Or are you having trouble switching over to the other partion in which case have you tried this procedure from the sticky on this forum:
Power Cycle the router three times.
Using the router’s power switch – turn OFF then turn back ON.
Wait 2 seconds then turn OFF.
Turn back ON.
Wait 2 seconds then turn OFF.
Turn back ON.
Router should have booted into opposite partition.

_________________
Linksys WRT3200ACM
Currently using Linksys Firmware until DDWRT lets my ObiTalk 202 complete calls when connected via WiFi
Last used DD-WRT Version: r38326
OpenVPN server
dan801
DD-WRT Novice


Joined: 03 Mar 2017
Posts: 26

PostPosted: Tue Dec 18, 2018 21:40    Post subject: Reply with quote
As I said I’ve managed to override the stock firmware some time ago. I can’t get it back. Tried many times but it keeps bricking the device. Had lots of help from this forum and internet and just can’t re-install without bricking it and going back to Ddwrt. So let’s say I can’t compare to the stock firmware. Any suggestions on settings or something g that’s set in-correct. Is there a stable firmware for 1900acs v2? I’ve plaid with the TX rate and channel settings quite a bit but makes no difference
BobbyLee
DD-WRT User


Joined: 04 Jul 2016
Posts: 131

PostPosted: Tue Dec 18, 2018 21:56    Post subject: Reply with quote
dan801 wrote:
Any suggestions on settings or something g that’s set in-correct? I’ve plaid with the TX rate and channel settings quite a bit but makes no difference

Sorry, the only difference between your settings and mine is I use NA-Mixed so my Chromecast can connect to 5 GHz and my router is a WRT3200ACM and it all works well. Hopefully someone who has been in your predicament with that same model router can get on here and help you. Good luck.

_________________
Linksys WRT3200ACM
Currently using Linksys Firmware until DDWRT lets my ObiTalk 202 complete calls when connected via WiFi
Last used DD-WRT Version: r38326
OpenVPN server
scar1943
DD-WRT User


Joined: 10 Nov 2018
Posts: 140
Location: South Carolina

PostPosted: Thu Dec 20, 2018 17:32    Post subject: Reply with quote
BobbyLee wrote:
How does it perform in comparison if you load up the Linksys firmware? That's how I determine if it's a DDWRT related issue or something else. From around r35898 to r370?? DDWRT WiFi would drop all the WiFi devices while the Linksys firmware had no issues dropping devices.


Though I have equipment capable of AC connections, they have proven to be a constant issue to maintain a good solid speed (or even a connection) when more than 20 feet from the router. Since my home is considerably larger, I resigned to the fact that if I want high speed, I needed to be wired, or simply be happy with a 20MHz mixed/N (65 to 130 mbps max seen) for phones, tablets, and laptops. DD-WRT vs Stock firmware irrelevant. They both acted the same for me.

So, though our house has two dual band wifi routers to cover us, they are locked down at static channels, and limited to 20MHz mixed/N due to the neighborhood congestion and a local international airport near by. Any attempt I make to push that limit, and the equipment becomes wifi useless. Desktops, smart TV's and satellite TV equipment are all hardwired. It was the only way to keep dependable connections so family members wouldn't constantly bark about connection issues.

So... In short, I have serious reservations about the usability of anything faster than narrow N speeds in our crowded frequencies. It all looks great on paper, and when selling equipment. But I sorta' kinda' want to be more than 10 or 20 feet from my wireless router...
d0ug
DD-WRT Guru


Joined: 31 Jul 2015
Posts: 724

PostPosted: Thu Dec 20, 2018 20:33    Post subject: Reply with quote
scar1943 wrote:
BobbyLee wrote:
How does it perform in comparison if you load up the Linksys firmware? That's how I determine if it's a DDWRT related issue or something else. From around r35898 to r370?? DDWRT WiFi would drop all the WiFi devices while the Linksys firmware had no issues dropping devices.


Though I have equipment capable of AC connections, they have proven to be a constant issue to maintain a good solid speed (or even a connection) when more than 20 feet from the router. Since my home is considerably larger, I resigned to the fact that if I want high speed, I needed to be wired, or simply be happy with a 20MHz mixed/N (65 to 130 mbps max seen) for phones, tablets, and laptops. DD-WRT vs Stock firmware irrelevant. They both acted the same for me.

So, though our house has two dual band wifi routers to cover us, they are locked down at static channels, and limited to 20MHz mixed/N due to the neighborhood congestion and a local international airport near by. Any attempt I make to push that limit, and the equipment becomes wifi useless. Desktops, smart TV's and satellite TV equipment are all hardwired. It was the only way to keep dependable connections so family members wouldn't constantly bark about connection issues.

So... In short, I have serious reservations about the usability of anything faster than narrow N speeds in our crowded frequencies. It all looks great on paper, and when selling equipment. But I sorta' kinda' want to be more than 10 or 20 feet from my wireless router...


I have seen the same issue with 2.4ghz. 40mhz channels are pointless if you live anywhere with others surrounding you with their own 2.4ghz signals. There just isn't enough bandwidth in the 2.4ghz band to support 40mhz channels unless you live in the middle of nowhere.

In my case in an apartment community. I have 4 2.4ghz only wifi security cameras. The connectivity with the cameras was very spotty with 40mhz channels, nor was much of a speed increase seen going from 20 to 40mhz. Dropping back down to 20mhz and the connectivity with the cameras is significantly better.

These aren't "smart" or "cloud" based cameras that intermittently transmit video when they detect motion or you view them remotely. They are cameras with an mpeg4 RTSP video stream, streaming about a 1mbit/s 720p 10fps video stream per camera 24/7 to a local video recording server. 1mbit/s per camera was chosen to not saturate my 2.4ghz wifi, 10fps was chosen as a compromise for what I wanted to capture, increasing the picture quality for the given bandwidth, and reducing storage needs to archive 30days of footage on the server for 4 cameras.
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