Future Fibre 900 Slow WiFi VS old Virgin 500Mb

Hi all, hopefully someone can help out as I'm starting losing the will to live with this situation.

I "upgraded" from Virgin 500Mb package to TT FF 900 with 2x Eero Pro 6 Mesh routers.

I used to have an Asus AC86U router connected to my virgin Hub 3.0 for WiFi around the house and I was always getting 530/540mb around the house on WiFi even though I was only paying for 500 ! Great ! Upload speeds were ok with about 35/40mb. Never needed ethernet since I haven't got a need for it due to the excellent WiFi.

When switching to TT 900 that's where the issue started.... They came in to install the ONT box on the wall and the eero pro 6 routers, and WiFi speeds are abysmal ! I'm getting 250/275mb around the house but upload for some reason is 110mb, so definitely getting the full advertised upload speeds but not download speeds.

I just thought the eero pro 6 was the culprit so I plugged in my old trusty Asus AC86U to the ONT and speeds were exactly the same, 250/275 download 110 up....

I then called TT who told me that from their end they can see I'm getting the full gigabit connection all the way to the ONT... Problem is I'm not ! Then they told me the speeds they're rating is for ethernet only as many factors can affect WiFi, which I understand, but with virgin had the full speeds even on WiFi, and my testing with my old router goes to show it's definitely not a problem with the devices I'm using (as they kept saying my devices need updating 🤦🏻‍♂️) using with a S22 Ultra Samsung phone, MacBook Pro M1 2021, LG oled TV and Xbox Series X, so definitely not an issue with my devices especially when they worked at full speed with virgin !

So what could be the issue because when I run a test on eero app itself it also says speeds are 950mb down and 110 up ? Once again the up speed is absolutely fine and fully working as advertised on all my devices but the down speed is locked on 250/270 on every single device !

I don't believe there's any setting to change on the Eero routers as even my Asus router is also having this issue and TT is adamant there's nothing else to do as they can see I'm getting the full speed...

At a last resort I connected a cat6E cable to my Xbox and yes the download speeds improved to 550mb but still a long way to the 900mb I should be getting and yet TT says I'm getting it full speed...

I am now just outside my cooling off period as they have dragged the whole thing down and cancelling is not an option anymore ! For the sake of £10/month I should have just stuck to virgin and am really regretting the move to TT to be honest !

At a last resort I connected a cat6E cable to my Xbox and yes the download speeds improved to 550mb but still a long way to the 900mb I should be getting and yet TT says I'm getting it full speed...

If you’ve got a GigE to USB adapter for your M1 MacBook - try a wired network connection from it directly into the ONT.

Hi that's what I've tried and am getting about 700mb, but my concern is the wifi speeds, unacceptable 250/270mb when virgin I had the full amount I was paying for. I don't use ethernet around the house at all.

Firstly you ought to be getting over 900, if not around 940 download or so, via a wired connection. Perhaps not sustained, but a peak connection speed at various times of days should be achievable.

WiFi is a whole other beast. Getting around 500 Mbps from a single AP/router in the same room isn’t comparable to a mesh setup. A mesh setup won’t ever have the performance of a single wired AP or multiple wired AP setup, due to the inherent inefficiency in mesh setups.

The mesh is not at fault here, like I said I also connected my old AC86U Asus router in the ONT and I'm also getting those speeds, same as the mesh Ereros so there's definitely an issue here. With virgin and the Asus I was getting 530mb WiFi same as ethernet.

In reply to a post by Sebseb888:

Hi that's what I've tried and am getting about 700mb, but my concern is the wifi speeds, unacceptable 250/270mb when virgin I had the full amount I was paying for. I don't use ethernet around the house at all.

So it is something in your property then as you are getting around 700meg when hardwired, so not TT's end. If it was their end or a connection fault you'd never get the 700meg you do hardwired. If you read the small print, no ISP will guarantee you any speed over Wi-Fi because by its very nature it is unreliable.

Have you tried changing the cable from the ONT to mesh/router? It could have got damaged during the changeover.

I know ISP's do not guarantee WiFi speeds but day before TT installed their ONT I was at 530 WiFi / 530 ethernet with virgin (on a 500MB package) and Asus AC86U then one day later, ONT installed and Eero Pro 6 (even only when 1 is plugged in and active, so without mesh setup) 270/275 WiFi / 700 ethernet and with Asus AC86U plugged staright int the ONT same results (270wifi/700 ethernet). Nothing else changed within those 13hrs between virgin and TT, absolutely baffles me ! I've even used 3 different cat cables between the ONT and the router but no difference whatsoever. And why would I get the whole full upload speed (100/110mb) but not the down ? I'm just banging my head as to what the issue is !

In reply to a post by Sebseb888:

I know ISP's do not guarantee WiFi speeds but day before TT installed their ONT I was at 530 WiFi / 530 ethernet with virgin (on a 500MB package) and Asus AC86U then one day later, ONT installed and Eero Pro 6 (even only when 1 is plugged in and active, so without mesh setup) 270/275 WiFi / 700 ethernet and with Asus AC86U plugged staright int the ONT same results (270wifi/700 ethernet). Nothing else changed within those 13hrs between virgin and TT, absolutely baffles me ! I've even used 3 different cat cables between the ONT and the router but no difference whatsoever. And why would I get the whole full upload speed (100/110mb) but not the down ? I'm just banging my head as to what the issue is !

Hi,
Would you mind posting the specs of the computer you are using, operating system.
This is just so I can check to see if your device is capable of gigabit speedtest wired?

Also have you tried the command line interface speedtest from Speedtest.net or the desktop app, as browsers can cause speeds to be a lot lower than expected.

I have shown this in the past on a gigabit connection where the command line and desktop app were hitting 940Mbps and the web would struggle getting past 800.

In reply to a post by Sebseb888:

Hi that's what I've tried and am getting about 700mb, but my concern is the wifi speeds, unacceptable 250/270mb when virgin I had the full amount I was paying for. I don't use ethernet around the house at all.

As I’ve said previously, 700 is not 940. What USB-C / Thunderbolt adapter are you using when connecting the MacBook directly to the ONT? The MacBook should easily sink the full bandwidth of the connection in both directions when wired.

What speed-tester are you using and to what server(s)?

Where are you located approximately.