R6700v3 bottlenecking internet speed

Question

We have an R6700v3 that we bought specifically for the internet controls. We've been having issues with our internet but after diagnosing it, it turns out the issues are with the R6700 itself. Any device connected to the router gets 85 Mb/s max. When a device is connected directly to the cable modem we get 400 Mb/s.

I'd try Netgear support but of course they don't offer it anymore, despite their firmware updates causing ridiculously slow speeds now. Any news from them on when they're actually fixing this in firmware?

plemans · Answer

Is it back to full speed? I can unmark it as solved. But if you're speeds are back, then isn't it resolved?The problem with the r6700 is it uses ctf to hit gigabit speeds. Its a pretty base model gigabit router and access control, traffic monitoring, parental controls, and qos all disable ctf. And sometimes it takes a full factory reset to get ctf re-enabled.&nbsp;
That's why its one of the things we recommend if simply disabling the service and a reboot doesn't fix the issue.&nbsp;
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barwick11 · Answer

plemans&nbsp;thanks, that helps understand why it's behaving that way.&nbsp; I didn't know it relied on cut through switching to be able to perform at expected speeds.&nbsp; To be honest I'm somewhat surprised it whacked speeds down to 10% of its rated speed.&nbsp; I do recall almost two years ago running a PC-to-PC connection through the router and getting a bit over 900 Mb/s.&nbsp; I hadn't tried that recently but seeing as prior to the reset it was only getting 85 Mb/s, hence 10% of rated speed.&nbsp;Honestly, that's really good information for someone to know about, that simple things like QoS, traffic monitoring, access control, and parental controls all disable cut through switching, which slows the router down.&nbsp; Especially considering the fact that I (and others I'm sure) bought this router specifically because it had "advanced" parental controls embedded into the router (ala Circle, which we had previously used the separate device for, but it relied on SSID spoofing).&nbsp;So unfortunately the router doesn't do what it's advertised to do in the first place now, because not only does parental controls slow the entire router down well below gigabit speeds, but in a separate issue, the parental controls don't even work properly anymore, and haven't for the last 8 months or so.&nbsp; Entirely unknown whether this has to do with the circle software or something Netgear disabled in the router itself, but before and even after the factory reset it doesn't track user's usage history, meaning the time limits we set for the kids don't do anything anymore.&nbsp; But... that's another issue altogether.&nbsp;Regardless, I can't see a good reason why CTF should slow a router down THIS much, but obviously it was somehow.&nbsp; It would probably be a good idea for Netgear to explain (in the device management interface) that certain functions may slow the router down significantly, and to try disabling them if the router is not performing at expected speeds.&nbsp;And... well... they should probably find out why CTF doesn't get re-enabled when those functions are turned off, and bug fix it.

plemans · Answer

1. what modem/gateway do you have?2. what firmware is on the router?&nbsp;
3. did you try replacing the cable between the modem--router and the cable router---device with a good quality cat 6 cable? I've seen sketchy cat 5/5e cables not link at gigabit speeds. You can check your port statistics.&nbsp;
How do I display Internet port statistics on my Nighthawk router? | Answer | NETGEAR Support

michaelkenward · Answer

barwick11&nbsp;wrote:
Any device connected to the router gets 85 Mb/s max.&nbsp; When a device is connected directly to the cable modem we get 400 Mb/s.

If this is a wifi connection, then it depends on the receiving end. 85 Mbps is as fast as some clients can manage. Nothing to do with the router.
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Do these things go a lot faster with different wifi sources?
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barwick11 · Answer

Firmware&nbsp;V1.0.4.122_10.0.95Yes I've tried cables.&nbsp; And the same cable from the router to modem was the same cable used from modem to PC (when the PC got 400 mb/s and the router got 80 mb/s)&nbsp;So, update on the status.&nbsp; Yesterday I did a full factory reset on it, spent hours re-setting up all my settings.&nbsp; I re-run the test, and it's running 400 mb/s after the factory wipe.&nbsp; No clue why this should change anything, or why one should have to factory reset to get full speed from your router, and no clue how long this will last before it requires me to do yet another factory reset, but...

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R6700v3 bottlenecking internet speed

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