need help for wifi optimization of tp-link archer c9 v1

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FogHunter
DD-WRT Novice


Joined: 29 Jun 2020
Posts: 3

PostPosted: Mon Jun 29, 2020 11:06    Post subject: need help for wifi optimization of tp-link archer c9 v1 Reply with quote
Hello,

I'll tell you my problem.
with the original firmware I had 200 mb/sec on my tp-link archer c9 v1 1750

but since the manufacturer doesn't update it anymore since 2016 I decided to switch to dd-wrt which fixes the KRACK security problem.

but now I'm averaging between 70 and 90 mbps.

I saw that there were many parameters and that depending on the modifications we made it changed the speed.

I still followed the recommendations in the documentation but it doesn't seem to help.

I would like to know how those who have this router have optimized it.

my router's in access point mode.


thank you in advance for your help.
Sincerely
Sponsor
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6154
Location: Netherlands

PostPosted: Mon Jun 29, 2020 11:11    Post subject: Reply with quote
Welcome to the forum

The first thing you should do is read the forum guide lines: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

Those tell you among other things to always state router model and build number.
For all we know you are using crappy build 40599 Sad

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Server setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Wireguard Client setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324624
Wireguard Advanced setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324787
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
FogHunter
DD-WRT Novice


Joined: 29 Jun 2020
Posts: 3

PostPosted: Mon Jun 29, 2020 11:38    Post subject: Reply with quote
egc wrote:
Welcome to the forum

The first thing you should do is read the forum guide lines: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

Those tell you among other things to always state router model and build number.
For all we know you are using crappy build 40599 Sad


Hello, No problem
here is my config


brand : tp-link
model : Archer c9
version 1.0
region : EU
serial number :2157409000185

thanks
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6154
Location: Netherlands

PostPosted: Mon Jun 29, 2020 12:03    Post subject: Reply with quote
Thanks but what is the build number of your DDWRT build (upper right hand corner (mine is 43516) ?
_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Server setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Wireguard Client setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324624
Wireguard Advanced setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324787
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
FogHunter
DD-WRT Novice


Joined: 29 Jun 2020
Posts: 3

PostPosted: Mon Jun 29, 2020 13:18    Post subject: Reply with quote
egc wrote:
Thanks but what is the build number of your DDWRT build (upper right hand corner (mine is 43516) ?



hello
my version DD-WRT v3.0-r43516 std (06/25/20)

thanks

_________________
config:

AP wifi
brand : tp-link
model : Archer c9
version 1.0
region : EU
serial number :2157409000185
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6154
Location: Netherlands

PostPosted: Mon Jun 29, 2020 13:45    Post subject: Reply with quote
That is a good build.

for Wifi settings:
https://wiki.dd-wrt.com/wiki/index.php/Basic_Wireless_Settings
https://wiki.dd-wrt.com/wiki/index.php/Advanced_wireless_settings

Basically:
Security: WPA2 Personal/CCMP AES 128
Never use Autochannel
2,4 GHz N/G Mixed
5 GHz, AC/N Mixed

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
OpenVPN Policy Based Routing guide: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Server setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Wireguard Client setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324624
Wireguard Advanced setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324787
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
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