Spectrum + AmplifiHD = slow wifi


  • I have Spectrum 400Mbps service for a while now and while working at home the lagging and slow performance has reached a point that makes it tough to use with AmplifiHD.

    My Setup:
    Spectrum Modem - Hitron E31N2V1
    AmplifiHD v3.3.0 firmware - plugged from WAN Port into Ethernet on back of E31N2V1
    2x Amplifi Meshpoint HD v3.3.0 firmware - both connected 5Ghz to AmlifiHD with Good status

    The best upload speeds I have ever hit are 100Mbps, but normally around 50-60 and sometimes as woeful as 20Mbps. The wifi strength is always good or better due to meshpoints but speed is DREADFUL.

    Testing:
    Added the Sagemcom RAC2V1S connected to an ethernet port (those always get 300+Mbps FYI) on the AmplifiHD.

    After adding the Sagemcom Wifi I can get 300+ easily anywhere in the house without the benefit of mesh!! Why did I spend $400+ on a router that gets pummeled by the default router that Spectrum gives me? I have seen the solution of putting the AmplifiHD into bridge mode - that is giving up, might as well have a paperweight that is in a nice white box with lots of wires.

    When is Ubiquiti going to resolve this issue?


  • Ed - Same. I have FIOS and the stock 5ghz is triple speeds. Bit of an embarrassment investing in this.


  • @Ed-Morris said in Spectrum + AmplifiHD = slow wifi:

    Hitron E31N2V1 Were you having this problem before updating to 3.3.0? I have not updated to that version because of too many reported problems. I work from home and do not need to spend time fixing a problem caused by an update.

    Additionally he Hitron modem may be the problem, not the AMPLIFI HD . I have the same 400Mbps service, an Arris modem and the AMPLIFI HD and I am getting the expected speed. I did some searching and there are reports that the Puma 7 chipset in the Hitron modem has caused a number of problems. The problem was supposed to have been corrected by now but may require a replacement to get an updated modem.


  • @Ed-Morris Other brands are also reporting issues with Spectrum, and for us it has been difficult to identify and isolate why the communications between some AmpliFi devices and the infrastructure on Spectrums side just does not work as desired.

    I was informed that Spectrum does not charge a rental fee for their equipment anymore, which could benefit certain environments greatly by using a modem/router combo device of theirs, allowing their equipment to manage the communication on their end. Then place AmpliFi in bridge mode to manage the Wi-Fi in your home.


  • @UI-Brett @James-Ford thank you for the replies. I am not willing to sacrifice the features in the AmplifiHD by putting it in bridge mode so I will try to see if i can make Spectrum give me another modem or use the Sagemcom Wifi and find a buyer for the AmplifiHD.


  • @Ed-Morris I recently had a similar issue with Spectrum. They installed a combo modem/router/WiFi, even though I specifically asked for modem only. Then, even though they had supposedly turned the router and WiFi off, the brand new AmpliFi router I installed had speed issues with firmware 3.1.2 and 3.3. After multiple calls and hours of testing, I finally got a tech to realize that their router hadn’t been put into bridge mode properly and once that was fixed, everything has been great. This was the fourth time speaking to someone about the issue and everyone I spoke to previously assured me over and over that everything was right on their end.


  • I get a whopping 150M at best with Spectrum gigabit on wifi, 900M on wired no problem. I have a Spectrum modem only so the Amplifi connects to it directly. My 802.11ac 2x2 and 3x3 devices all get from 85-150M. Actually the 3x3 is getting 90M and the 2x2 phone is getting 120M most places, 150M right in front of the unit. They gave me a router but I'm not using it.

    This AmplifiHD has been a big let down, and embarrassment, having spent $500 on this stuff.


  • Has there been any more recent updates from Amplifi on trying to resolves these issues? I subscribe to 400Mbps and get only 120-150 MBPS performance. Still looking for better performance.


  • @bwfisher I get similar results. Spectrum's Gigabit modem to AmpliFi HD to Apple MBPro wired 940 mbps up, 40 mbps down, great! Similar results modem to MBPro direct. However, wireless to MBPro 45 mbps up, 18 mbps down, disappointing. Spectrum Gigabit to Apple iPhoneMax 11 wireless 231 mbps up 15 mbps down. Sitting right next to AmpliFi HD in all tests. Ookla Speedtest results.


  • @Daniel-Greenhalgh So do we need to get what modem with wifi from Spectrum and have them bridge it and plugin Amplifi to get the speed correct?


  • @Christopher-Daly I would ask them to make sure their unit is set to bridge only if you want to use AmpliFi as the Router in your setup.


  • Hello. Thank you @Ed-Morris, for the post 9 months ago, and thank you to all who replied. Very interesting discussion. ☺

    I just upgraded to Spectrum 400 Mbps service in the Los Angeles area, and I am considering purchasing an Amplifi HD router.

    @James-Ford, nice to hear that your service is what you were expecting. Are you in the Los Angeles area?

    @Daniel-Greenhalgh, nice to hear your issue was resolved.

    @Ed-Morris, @bwfisher, @cigar09, @Christopher-Daly, please, can you let us know how your experience turned out with Spectrum and Amplifi? Is your Spectrum service in the Los Angeles area?

    Thank you, everyone, for any insights you can share!


  • @markabajian it still sucks. I would avoid. St. Louis area.


  • @Daniel-Greenhalgh So Spectrum was out yesterday and speed into the Spectrum modem (no Wifi) he was recording 365mpbs. He plugged in Amplifi into the modem and then tested the speed with his meter and he got 334 through Amplifi. Standing literally next to the Amplifi base, my mobile app recorded 155.9 mbps.

    The router is in my office and I have an iMac desktop for work from home - it got to 346mbps. I tested on the Amplifi Mobile app Samsung S10 sitting in my office - 133.1mbps. I tested on my iMac (wifi connected) and it read 70mbps download on oklaspeedtest and Google project stream read 268.tmbps. All of these tests in the last couple of minutes.

    We use the Amplifi system because the antennas allow us to have service across the house. The house is large (8,000 s.f.) and has brick walls from the basement to the attic. So getting a signal through is difficult at best.

    So long story short - it worked yesterday and sort of today depending on the device and we are likely looking for a contractor to run Cat5 through the house and just connect directly with ethernet.


  • @Christopher-Daly Run at least Cat5e, and better yet Cat6.


  • @markabajian No. I live in Minnesota.


  • @Matthew-Leeds Probably Cat6 but the wires are thicker and harder to run. The amplifier antenae will be kind of useless. At that point probably just use Spectrum WiFi modem router. It's just very difficult to get signal strength through the walls wirelessly.


  • @bwfisher, @James-Earl-Ford, thank you for the update. Useful information. ☺


  • @Christopher-Daly @markabajian I have abandoned the Amplifi wifi and gone back to the Spectrum wifi for my 400mpbs service - it is a RAC2V1S - and the wifi speeds are MUCH better vs using the Amplifi Router with mesh devices. The Amplifi ethernet always gave me 400+mbps unless the Spectrum service was slow overall. The best I ever got on the Amplifi wifi was between 100-200mpbs with devices ranging from Lenovo X1 Extreme, Samsung S10. Using the Spectrum supplied wifi I get 350+ regularly on my S10, S21 and other devices. I love the management and the services that Amplifi provides but not at the cost of that much speed difference.


  • @Ed-Morris, thank you for the update and useful information. ☺


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