Nighthawk R7000P limited speed

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tk101
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Joined: 31 Jul 2024
Posts: 3

PostPosted: Wed Jul 31, 2024 19:27    Post subject: Nighthawk R7000P limited speed Reply with quote
I have looked at the discussions with similar topics here and on other boards but the solutions do not seem to work or are not applicable to my situation.

I have pfSense running on a small box with two gigabit ports. I have the OPT1 and OPT2 gig links running to a gig switch and a Nighthawk R7000P, that I am simply using for my WiFi AP. It is running the newest version of DD-WRT available for it and the WAN is disabled so it will simply act as the WiFi adapter. QoS is disabled and the only option that ever shows (regardless of WAN settings) on the setup page for SFE is On/Off (no CTF&FA) options. SFE is on.

My service is over 500Gbps down (tests push and occasionally surpass 600). My pfSense tests correct speeds. My computer attached to my switch on the pfSense box tests correct speeds. But anything on my Wifi barely pushes 120 max on 5GHz, sitting right next to the router. I did a speed test in DD-WRT and the Wifi Speed is 500+ but the Internet Speed is testing around 100-120. So the bottleneck is apparently on that link. I do not believe it is the pfSense box because the other link works fine to the switch. I am assuming it is a configuration issue with the router that is limiting the Internet speed.

I also just replaced the cable with a brand new Cat6, just to rule that out.

I have read DD-WRT sometimes has this issue with these routers, and the suggestions are stock firmware or some Merlin-based variant for the Nighthawk. But I have used DD-WRT forever and like it so I would prefer getting this working if I can.

Thanks for any suggestions.
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BFG-9000
DD-WRT Novice


Joined: 31 Dec 2017
Posts: 24

PostPosted: Wed Jul 31, 2024 20:16    Post subject: Reply with quote
Those suggestions you have read for stock or Merlin are to increase WAN to LAN routing speeds, since those may have better CTF(Cut Through Forwarding) and FA(Flow Acceleration) implementations than can be possible with later Kernels given much less development time for drivers. That's not applicable here since you are using it as an AP.

The problem is... R7000P is an abomination because its 5GHz radio is attached via USB like R8000, so uses the unreliable Dongle Host Driver + as you'd expect that would require more CPU power just to shepherd the packets through USB over to and from the LAN. And unlike BCM43602 on R8000 none of its radios features its own 320MHz ARM CPU and 960kB of SRAM to fully offload/hardware-accelerate Wifi, further increasing CPU usage because that all has to be done in software using the main CPU. 1GHz of dual-core ARM only goes so far.

7000P is perfectly serviceable on 2.4GHz, but buggy and slow on 5GHz. Even on stock. At least R8000 has a 2nd 5GHz radio attached via PCIe.
tk101
DD-WRT Novice


Joined: 31 Jul 2024
Posts: 3

PostPosted: Wed Jul 31, 2024 21:32    Post subject: Reply with quote
So the Speedchecker test in DD-WRT - the Internet Speed *should* reflect something near my service down speed, correct? Because a speed test on my phone is showing ~120Mbps, which aligns with the Internet speed of Speedchecker. Whereas a speed test on my PC wired to the switch shows the full 500Mbps+. So regardless of the 2.4G vs 5G on the 7000P, shouldn't that link still be getting over 120 to the router? Like the bottleneck is not the Wifi but the link from my router to the AP.
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 15522
Location: Texas, USA

PostPosted: Wed Jul 31, 2024 22:00    Post subject: Reply with quote
tk101 wrote:
It is running the newest version of DD-WRT available for it and the WAN is disabled so it will simply act as the WiFi adapter. QoS is disabled and the only option that ever shows (regardless of WAN settings) on the setup page for SFE is On/Off (no CTF&FA) options. SFE is on.

You are not running the current release. The router database does not have the current release nor is it the source of downloading
anything unless a device wiki or other in-house, NON-THIRD PARTY source of information says to use it, regardless of what the main
website says. You completely ignored the disclaimer and didn't look further, apparently. SFE should be OFF for wired AP mode, and
that is probably why you are having issues. Some further reading for you:

Forum Rules and Guidelines English
Announcement: Broadcom Forum FAQ – README
Netgear R7000P | DD-WRT Wiki (another Wiki on my to-do list to edit)

Current release as of this post:

https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2024/07-27-2024-r57595/netgear-r7000P/

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tk101
DD-WRT Novice


Joined: 31 Jul 2024
Posts: 3

PostPosted: Thu Aug 01, 2024 0:24    Post subject: Reply with quote
kernel-panic69 wrote:

You are not running the current release. The router database does not have the current release nor is it the source of downloading
anything unless a device wiki or other in-house, NON-THIRD PARTY source of information says to use it, regardless of what the main
website says. You completely ignored the disclaimer and didn't look further, apparently.


Just because my profile says I'm new to the forum in no way means that I am new to DD-WRT, the disclaimer, the resources, or doing my research. Also, I never stated what version I am using, so I am not sure how you would know. So thanks for making assumptions and addressing me with your condescending statement. At least it didn't take long to learn the attitude of the "GURUs" around here to someone asking for support. That way I know I can just look elsewhere for further assistance from people without a god complex.

Don't worry about following up. I'll resolve my issue on my own, thanks.
lexridge
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Joined: 07 Jun 2006
Posts: 1830
Location: WV, USA

PostPosted: Thu Aug 01, 2024 4:17    Post subject: Reply with quote
tk101 wrote:
Just because my profile says I'm new to the forum in no way means that I am new to DD-WRT, the disclaimer, the resources, or doing my research. Also, I never stated what version I am using, so I am not sure how you would know. So thanks for making assumptions and addressing me with your condescending statement. At least it didn't take long to learn the attitude of the "GURUs" around here to someone asking for support. That way I know I can just look elsewhere for further assistance from people without a god complex.


Wow, not sure who is condescending here, but pretty sure it's not KP. He assumed maybe correctly, maybe not, like anyone who regularly visits this forum, that you followed the router database suggestion, which is quite far from the most recent version. Easy mistake to make, if it was a mistake. You still have never stated the version you are running. This makes a huge difference! IT IS A NORMAL QUESTION on this forum (if you had taken the time to read the forum, you would have known this). He also gave you very good links to follow and read.

Good luck

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kernel-panic69
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Joined: 08 May 2018
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Location: Texas, USA

PostPosted: Thu Aug 01, 2024 5:45    Post subject: Reply with quote
This is how I came to the conclusion:
tk101 wrote:
...the only option that ever shows (regardless of WAN settings) on the setup page for SFE is On/Off (no CTF&FA) options.

If you were on the latest release, you'd have CTF, CTF+FA. How do I know? I have a R7000P in inventory and used it to navigate some of the reports in the forum.

If I need to, I can pull screenshots after I update which firmware version is on it as it's not a daily driver. Rolling Eyes

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egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 13532
Location: Netherlands

PostPosted: Thu Aug 01, 2024 7:21    Post subject: Reply with quote
I do not have one and will not purchase one exactly because of the DHD implementation.

That said 120 Mb/s for 5 GHz seems low, maybe someone actually using it can confirm if this is the max speed, I am assuming Ch36, 80 Mhz wide etc.

But it will not hurt to check your Wireless settings, there is a sticky in this forum with the best wireless settings also scroll down to the bottom of that thread and yes CTF, CTF+FA can also speed up bridge traffic so can help a tiny bit.

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Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 13532
Location: Netherlands

PostPosted: Thu Aug 01, 2024 8:02    Post subject: Reply with quote
BFG-9000 wrote:
Those suggestions you have read for stock or Merlin are to increase WAN to LAN routing speeds, since those may have better CTF(Cut Through Forwarding) and FA(Flow Acceleration) implementations than can be possible with later Kernels given much less development time for drivers. That's not applicable here since you are using it as an AP.

The problem is... R7000P is an abomination because its 5GHz radio is attached via USB like R8000, so uses the unreliable Dongle Host Driver + as you'd expect that would require more CPU power just to shepherd the packets through USB over to and from the LAN. And unlike BCM43602 on R8000 none of its radios features its own 320MHz ARM CPU and 960kB of SRAM to fully offload/hardware-accelerate Wifi, further increasing CPU usage because that all has to be done in software using the main CPU. 1GHz of dual-core ARM only goes so far.

7000P is perfectly serviceable on 2.4GHz, but buggy and slow on 5GHz. Even on stock. At least R8000 has a 2nd 5GHz radio attached via PCIe.


@BFG-9000 the current CTF , CTF&FA implementation is actually very good it gives you near gig speed LAN<>WAN see: https://wiki.dd-wrt.com/wiki/index.php/Hardware scroll down to the bottom.

DHD is trash indeed Sad

Furthermore the best throughput testing is done with iperf e.g. between your laptop on wifi and another PC on your LAN see: https://github.com/egc112/ddwrt/blob/main/HOW-TO%20iperf3%20throughput%20testing.md

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Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
itwontbewe
DD-WRT User


Joined: 29 Sep 2020
Posts: 264
Location: United States

PostPosted: Thu Aug 01, 2024 12:31    Post subject: Reply with quote
are you choosing a channel number or leaving it on auto?

on the R7000P if you leave it on auto you will get a 20 width channel

i don't have a fast isp but my wifi easily exceeds 300

*
i don't need 2.4 GHz so i disable it

if you run both 2.4 & 5 GHz you may get rey key drops

when i run 5 GHz by itself i don't get them
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