[Uner]

Linksys WRT1900ACS, Firmware: DD-WRT v3.0-r56409 std (05/18/24)

Here is my 5GHz wifi configuration:

Radio Mode AP
Domain UNITED_STATES
Network Mode AC Only
Channel Width VHT80 (80 MHz)
Channel 140 - 5700 MHz
Extension Channel LU (-2)
Allow Channel Overlapping Disable
SSID Broadcast Enable
Advanced Settings OFF
Radio Scheduling Disable

Please share your working 5GHz/2.4GHz wifi configuration
Thanks.

[Monza]

Since there are no responses I'll share this setup photo from my 1200. This setup has worked well for me for a couple of years now. Having said that I suggest you not expect THIS setup to work perfectly for you.

I use LinSSID to help chose the best channels FOR MY LOCATION. I've never used inSSIDer but here's a link for both apps below. Do a web search for wifi survey apps for others that are available . . I'm partial to free =)

(I suggest you update to the latest release and do so on every release unless there are posts that recommend you skip the newest release. Wait a day or two for input on the new releases)

For Linux LinSSID (It's already available in Software Manager on Linux Mint)
https://sourceforge.net/projects/linssid/

For Windows inSSIDer (I've never used it so . . )
https://www.metageek.com/inssider/

I also have WPA3 Personal enabled on my setup but I don't recommend you enable it . . period. Seems to crash everyone but me. =(

If anyone sees any improves to these settings please share =)

[Uner]

Thanks Monza, Every setting is same as mine except "Multicast to Unicast" and the channel frequency, I will try to find better channels maybe that will fix my problem.
Also maybe WRT1900ACS should have different configuration from WRT1200, So if someone has WRT1900ACS and can share his configuration that will be appreciated.

[Monza]

You're welcome, hope you can get your wifi to stabilize. I actually don't remember enabling Multicast To Unicast but it was probably when I was installing the doorbell camera??? I'm not noticing any problems so I'll just leave it for now. =) Edit: Actually I'm going to disable it on both and see how it goes. As long as the Roku's don't rebel I'm good . . .=D

If anyone has pros/cons on Multicast To Unicast please post them for consideration.

Here's the info on settings for Multicast To Unicast

Info Source - https://forum.dd-wrt.com/wiki/index.php/Atheros/ath_wireless_settings#Multicast_To_Unicast

************************
Multicast To Unicast

Available Settings: Enable, Disable

Default Setting: Disable

Recommended Setting: Disable

Request that the AP will do multicast-to-unicast conversion for ARP, IPv4, and IPv6 frames. If enabled, such frames are to be sent to each station separately, with the DA replaced by their own MAC address rather than the group address. Note that this may break certain expectations of the receiver, such as the ability to drop unicast IP packets received within multicast L2 frames, or the ability to not send ICMP destination unreachable messages for packets received in L2 multicast (which is required, but the receiver can't tell the difference if this new option is enabled). Enable only if you have issues detecting devices on the network that are connected over Wi-Fi, such as security camers, printers, and any type of "Smart" devices.