Joined: 20 Oct 2009 Posts: 52 Location: Czech Republic
Posted: Sat Aug 10, 2024 19:51 Post subject: R9000 - 2.4GHz broken since r50963
Hi, i had my Netgear R9000 running on r50927 for long time, then in February upgraded to r55109 and is the one i've been using so far without problems... or so i thought.
I didn't notice until a few days ago that the 2.4Ghz is broken (because i don't use it so much), close to the router i can get around 20Mbs, but if i go just a bit far it drops to 1 or 2Mbs and in the and 2nd floor is completely useless.
With r50927 i get around 60Mbs.
Today i tested r50963 which is the one right after r50927 and the 2.4Ghz is already broken there (i tried with upgrade 1st and then i also tried with reset).
Test from my PC (connected via lan cable to the R9000) to my Samsung S20FE5G (r50927):
iperf3 -f m -i 5 -t 30 -c 192.168.0.79
Connecting to host 192.168.0.79, port 5201
[ 5] local 192.168.0.6 port 36656 connected to 192.168.0.79 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-5.01 sec 24.2 MBytes 40.6 Mbits/sec 2 286 KBytes
[ 5] 5.01-10.01 sec 37.8 MBytes 63.3 Mbits/sec 0 366 KBytes
[ 5] 10.01-15.01 sec 37.9 MBytes 63.5 Mbits/sec 0 382 KBytes
[ 5] 15.01-20.00 sec 37.8 MBytes 63.3 Mbits/sec 1 450 KBytes
[ 5] 20.00-25.01 sec 38.1 MBytes 64.0 Mbits/sec 3 331 KBytes
[ 5] 25.01-30.01 sec 37.6 MBytes 63.1 Mbits/sec 0 399 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-30.01 sec 213 MBytes 59.7 Mbits/sec 6 sender
[ 5] 0.00-30.01 sec 211 MBytes 59.0 Mbits/sec receiver
iperf Done.
Test from my PC (connected via lan cable to the R9000) to my Samsung S20FE5G (r50963):
iperf3 -f m -i 5 -t 30 -c 192.168.0.79
Connecting to host 192.168.0.79, port 5201
[ 5] local 192.168.0.6 port 46600 connected to 192.168.0.79 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-5.01 sec 8.25 MBytes 13.8 Mbits/sec 1 185 KBytes
[ 5] 5.01-10.01 sec 14.4 MBytes 24.1 Mbits/sec 3 148 KBytes
[ 5] 10.01-15.01 sec 8.50 MBytes 14.3 Mbits/sec 1 144 KBytes
[ 5] 15.01-20.01 sec 15.5 MBytes 26.0 Mbits/sec 1 160 KBytes
[ 5] 20.01-25.01 sec 16.9 MBytes 28.3 Mbits/sec 0 215 KBytes
[ 5] 25.01-30.01 sec 16.4 MBytes 27.5 Mbits/sec 2 156 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-30.01 sec 79.9 MBytes 22.3 Mbits/sec 8 sender
[ 5] 0.00-30.01 sec 78.6 MBytes 22.0 Mbits/sec receiver
iperf Done.
Tests were done with the phone close to the router.
Anyone else using R9000 seen the same issue with 2.4Ghz wifi? _________________ Netgear R9000
DD-WRT v3.0-r55109 std (02/09/24)
Router, AP, WDS, VAPs, SFE off
Firewall / NAT / VLANs
DNS / DHCP / DDNS / SSH / NTP / Syslog / Cron
Wireguard / OpenVPN
USB Storage / Entware (LIGHTTPD & TFTPD)
2.4GHz: Vanilla, N/G, VHT40, TQAM, LDPC, Disassoc Low ACK, Shrt Preamble/GI, Airtime Fairness, WMM, ACK Timing 900, WPA2 (AES), WPA2 ENTP (AES)
5GHz: DD-WRT, AC/N, VHT80, Disass Low ACK, Shrt Preamble/GI, Singl Beamforming, Airt Fairness, WMM, ACK Time 900, WPA2(AES), WPA2 ENTP(AES)
I think you'd have the same probability of getting an answer from someone still running r55109 (09/Feb/24) on Netgear R9000 with similar experience of slow 2.4GHz as winning a lottery ticket.
That being said, you would have more chance of getting an answer if you have your R9000 running latest firmware version for obvious reason.
I have R9000 running r57753 (04/Aug/24) and and its 2.4GHz link gives me a top downstream speed of around 41Mbps on my Samsung Galaxy A12 smartphone.
BTW, i use DDWRT Firmware instead of VANILLA. See pic. for add. info.
Joined: 16 Nov 2015 Posts: 6785 Location: UK, London, just across the river..
Posted: Sat Aug 17, 2024 8:38 Post subject:
ACK Timing 500 is wrong...try to use 450, 900 or 3150.. (im on 900)
also speed can vary clients to client are different...moreover testing with phone that usually don't have decent radios...may produce bad results...
For example my R9000 is fine...with 2.4Ghz and delivers decent performance and has a decent range...also to try, a different country domain...like PANAMA or CANADA..those use full TX power on 2.4ghz
Bear in mind R9000 is also know with overheating issues that affect radios and those are prone to burn out in time...its just its bad heat sink design...i usually set my internal fan to work non stop...with low temp values like 25-30 C and also have it in air-conditioned room, other users use a extra fans pointed on the top and ect... last build i use on it is 57707 but will move on soon..just 57956 was Openssl buggy on my R7800 so, i didn't update the rest of my routers...R7800 is still on 57834 as those ssl problems affected my VPN client side... _________________ Atheros
TP-Link WR740Nv1 ---DD-WRT 58184 WAP
TP-Link WR1043NDv2 -DD-WRT 59369 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 59369 Gateway/DoT,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 59582 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 59582 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Dynalink DL-WRX36-DDWRT 59582
Broadcom
Netgear R7000 --DD-WRT 59582 Gateway/DNScrypt-proxy2/AD-Block,IPset Firewall,Forced DNS,x4VLAN,VPN
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913
Joined: 20 Oct 2009 Posts: 52 Location: Czech Republic
Posted: Sat Aug 17, 2024 10:42 Post subject:
Changing ACK Timing from 500 to 900 definitely made it better, now i can get 60Mbs just like i had with r50927.
Country i have PANAMA, 5GHz TX 30dBm, 2.4GHz TX 30dBm.
I never looked at the temperature before, and we are in summer so room temperature is usually above 30º, i just checked the R9000 temperatures just now and seems quite high for the radios: