RBR40

[mcdonaldd]

Just upgraded to AT &T high speed which it works when im on AT & T, but when im in a different section of my house and connected to Orbi the speeds are super slow

[FURRYe38]

What is the Mfr and model# of the ISP modem/ONT the NG router is connected too?
Is the Orbi system operating in Router or AP mode?
Was this happening before you changed your ISP? 

What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router

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 enabling Beamforming and MIMO(MIMO may or maynot be needed) and WMM. Under Advanced Tab/Advanced Settings/Wireless Settings

Try disabling the following and see:
Armor, Circle, Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Set Short preamble instead of Long preamble modes. Save settings and reboot the router and satellite(s).

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@mcdonaldd wrote:
Just upgraded to AT &T high speed which it works when im on AT & T, but when im in a different section of my house and connected to Orbi the speeds are super slow

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