Orbi RBR50 and Slow WiFi Problems with iOS Devices

What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?

Try disabling the following and see:
MIMO, Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Save settings and reboot the router and satellite(s).

Also Advanced Wireless Settings both 2.4GHz and 5GHz changed CTS/RTS Threshold to 2307.
https://community.netgear.com/t5/Orbi/Orbi-RBR40-RBS40-V2-1-4-16-mesh-network-drops-connection-to/m-p/1601598/highlight/true#M35230
I changed the CTR/RTS threshold values for both 2.4 GHz and 5 GHz (2341 and 2345 respectively), changed preamble modes to long preamble, and Set 20/40Mhz Coexistence to 40Mhz only.  

I would try the above suggestions in router mode however...

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imranar wrote:

Hi All;

 

Thanks for the wealth of discussion in this topic. I'm facing similar issues albeit very particular to a certain model of iPhone. I have found a solution that seems to work so far and am testing it for a few days to assess if it's a permanent solution. Do note that my Orbi system is a certified refurbished set from Amazon.

 

Current setup:

Fiber Broadband (ONT Modem) -> Orbi RBK50 Router => Orbi RBS50 Satellite

 

Wired Devices:

1. Synology NAS DS1518

 

Wireless Devices:

1. iPhone 8

2. iPhone 7

3. iPad Pro 9.7

4. HP Elitebook

5. Samsung Galaxy S9+

6. Samsung Chromebook Pro

7. 3 units of LG Smart TVs

8. HP Wireless Printer

 

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All of my network devices work happily with the Orbi with the exception of the iPhone 8, which exhibits the intermittent & laggy symptoms discussed in this thread and many others. My suspicion was initially that the iPhone 8 had a buggy wireless antenna and had the iPhone RMAed since it's under warranty. However, to my surprise, even the new iPhone 8 exhibited the same symptoms.

 

Workaround - Alternative Wireless Repeater

I had a suspicion that the wireless connectivity between the Orbi & the iPhone was somehow not working out and decided to isolate that. I tested the iPhone 8 at a different location on both 2.4Ghz & 5Ghz with no problems. I then installed a wireless repeater in my home network that connects to the Orbi via a wireless backhaul. Interestingly, the connection improved but was still flaky. I decided to isolate the next logical layer, which is the router stack.

 

Current Solution - Alternative Router

I then dusted off my previous Luma router, configured the Orbi in AP mode and my current setup is as follows:

Fiber Broadband (ONT Modem) -> Luma Router -> Orbi RBK50 (AP Mode) => Orbi RBS50 Satellite

 

At the time of writing this post, all of my devices on the network are happily getting along. I'm going to monitor the situation for at least a week and report back here if it is stable as a permanent solution.

 

However, this does not shed any light on the root cause of the issue. I'm not sure if my refurbished set is still faulty per se, but the behaviour specific to the iPhone  8 is baffling.

 

 

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