[FogHunter]

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

[egc]

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

[FogHunter]

[egc]

Thanks but what is the build number of your DDWRT build (upper right hand corner (mine is 43516) ?

[FogHunter]

[egc]

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