Slow ping on 5GHz, but not on 2.4GHz on WRT1900ACSV2

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ttowling
DD-WRT User


Joined: 01 Mar 2019
Posts: 130

PostPosted: Sun Jun 02, 2019 19:11    Post subject: Slow ping on 5GHz, but not on 2.4GHz on WRT1900ACSV2 Reply with quote
Problem: I am getting pings of around 17ms on 2.4GHz, but 45ms + on 5GHz (when connected by ethernet it is around 15-17ms, so no problem with 2.4GHz).

I have read a few blog posts blaming the open drivers from Linksys, but can anyone suggest anything I might be missing to improve latency on 5GHz?

I am using the latest build from 30/05/2019
Mostly default settings.
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Ah-Pin-Kor
DD-WRT User


Joined: 19 Sep 2015
Posts: 267

PostPosted: Wed Jun 05, 2019 4:24    Post subject: Reply with quote
Are you pinging your router IP from a client?
What client are you using?
I ping my router IP from my laptop (intel n7260 wifi) to my wrt1900acsv2 (tried 39884 (30 may) and 39944), pings should be <2ms for wired connection. For wireless, I get low single-digits, and a teen once in a while.
If I use an iPhone8 to do wireless ping, I get between 10-20ms.

_________________

Netgear R7800 kongpro 19.07 20190919 || Netgear R7000 36070M kongac (Client Bridge=5GHz, AP=2.4GHz with bridged VAP)
Linksys WRT32X davidc502 OpenWrt || Linksys WRT1200ACv1 Gargoyle 1.11.x
Linksys WRT1900ACSv2 dd-wrt 39956
ttowling
DD-WRT User


Joined: 01 Mar 2019
Posts: 130

PostPosted: Wed Jun 05, 2019 7:30    Post subject: Reply with quote
Ah-Pin-Kor wrote:
Are you pinging your router IP from a client?
What client are you using?
I ping my router IP from my laptop (intel n7260 wifi) to my wrt1900acsv2 (tried 39884 (30 may) and 39944), pings should be <2ms for wired connection. For wireless, I get low single-digits, and a teen once in a while.
If I use an iPhone8 to do wireless ping, I get between 10-20ms.


Pinging a remote server - in the UK.
ttowling
DD-WRT User


Joined: 01 Mar 2019
Posts: 130

PostPosted: Wed Jun 05, 2019 20:13    Post subject: Reply with quote
Ah-Pin-Kor wrote:
Are you pinging your router IP from a client?
What client are you using?
I ping my router IP from my laptop (intel n7260 wifi) to my wrt1900acsv2 (tried 39884 (30 may) and 39944), pings should be <2ms for wired connection. For wireless, I get low single-digits, and a teen once in a while.
If I use an iPhone8 to do wireless ping, I get between 10-20ms.


On my laptop using 2.4GHz or 5GHz with N the ping to the router is <2ms. With my phone on ACS (Android 9.0) ping is c.20ms. (Both using ping command in terminal).
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