This topic

Only getting half of Full Fibre 900

samharman88 — Thu, 17 Nov 2022 12:42:31 GMT

Afternoon all,

Literally just had full fibre installed at my property (OR engineer left an hour ago).

I’ve gone for the Full Fibre 900 package but after testing (via wifi and directly) I only appear to be getting half that.

I know I’m jumping the gun and have to let the line “settle” and leave it a few days but is there potentially a router limit/ cap or something I need to switch off before I call BT on Monday if things dont improve?

I’ve gone from 40Mb down to 400+ Mb so I’m not complaining, just want what I’m paying for thats all

Thanks in advance

Re: Only getting half of Full Fibre 900

JonMace — Thu, 17 Nov 2022 14:17:15 GMT

do a spped test on the mybt ap and see what it says the speed the the sh2 is

Re: Only getting half of Full Fibre 900

samharman88 — Thu, 17 Nov 2022 16:00:15 GMT

I think I have an unrealistic view of how much wifi I should be getting.

the MyBT speed tests says I’m getting well in excess of 900Mb to the hub but via wifi to my phone its between 450-520 (which is amazing by the way I’m not complaining)

In my head I was expecting wifi speeds of maybe 700+ probably unrealistically.

My Sky Glass and PS5 can now be hardwired to the router so at least they will be getting the top end speeds

Re: Only getting half of Full Fibre 900

JonMace — Thu, 17 Nov 2022 16:08:44 GMT

yeh max i get on wifi is about 350 which is loads for a phone I have my NAS and server hard wired and they do all large file downloads which need the full bandwidth

Re: Only getting half of Full Fibre 900

DavidM — Thu, 17 Nov 2022 16:40:40 GMT

Hi @samharman88 and welcome to our community.

Thanks for sharing your experience. Looking at your speed results I'd say you've got a fantastic connection. @JonMace is obviously correct, wireless will always be slower than hard wired.

Cheers

David

Re: Only getting half of Full Fibre 900

samharman88 — Thu, 17 Nov 2022 17:00:32 GMT

Thanks @DavidM and @JonMace for your words of advice.

I agree its a brilliant connection, definitely 10x the speeds I was getting before so I’m Definitely not complaining I was just wondering if it gets throttled at all

Re: Only getting half of Full Fibre 900

pippincp — Thu, 17 Nov 2022 19:46:02 GMT

BT do not throttle any connection, ADSL, VDSL or FTTP.

Re: Only getting half of Full Fibre 900

Mapantz — Thu, 17 Nov 2022 23:14:59 GMT

You won't get near 900Mbps over Wi-Fi unless you have a Wi-Fi 6,6e, 7 router, and the device you're using also supports Wi-Fi 6 etc.

I've managed 550Mbps down over Wi-Fi 5, but my average is about 530Mbps.

Re: Only getting half of Full Fibre 900

starsky101 — Fri, 18 Nov 2022 10:26:30 GMT

Hi,

I was interested to have the same performance, 900+ directly connected, around 400 on a laptop next to the router and around only 100 upstairs in the office.

I'm intrigued as to why there's such a big drop off in speed when adjacent to the router. Others have posted that the hardware will just not perform at those speeds, but it's the router BT supply and as I understand it, wifi works at the speeds of light so how come there's such a dramatic drop in performance. I'm considering wiring Cat 6 cables all over the house now!

Any tech heads out there can explain I'd be most grateful.

Re: Only getting half of Full Fibre 900

JonMace — Fri, 18 Nov 2022 11:03:19 GMT

Wifi, is rated on max theoretical speeds not real world speeds. So takes no account of any interferance, distance, over heads etc.

Also Wifi is only capable of transmitting in one direction at a time, where as wired is bidirectional so depending on what you are doing wifi will only be half the true speed of wired

Re: Only getting half of Full Fibre 900

mikemod — Fri, 18 Nov 2022 11:25:14 GMT

I have a Pixel 7 Pro and it manages full speed on WiFi so just depends on device.

Re: Only getting half of Full Fibre 900

ptrduffy — Fri, 18 Nov 2022 16:18:30 GMT

When you're on a wired connection, only your laptop is making use of that wire - it can send and receive data at 1Gbps without having to worry about what other devices are doing, using an electrical connector whose properties are almost constant.

When you're on WiFi you're sending data on radio frequencies. If you've ever been listening to the radio in a car driving in remote areas, or going through tunnels, you know that the signal can fade in and out - the same issues exist in your home, with walls and ceilings between the router and your devices, furniture and doors (and people) getting in the way, microwave ovens being switched on, temperature and humidity changing.

To ensure you can still get reliable communication as the environment gets more challenging, your phone/laptop/whatever will lower its data rate (trading speed for reliability).

On top of all the above, your devices all share the WiFi radio frequencies (and share them with neighbours as well). If two devices try to transmit on the same frequency at the same time their transmissions collide with each other and are lost. In this case, each device has to repeat its transmission later. As more and more devices use the WiFi, collisions become more frequent meaning more retransmissions, and lower throughput for all devices.

Re: Only getting half of Full Fibre 900

Mapantz — Fri, 18 Nov 2022 16:25:00 GMT

@mikemod

It doesn't depend on the device.. The Pixel 7 has the same WLAN as my Galaxy - 6e capable, and I don't achieve the full speed of fibre 900.

You have a Wi-Fi 6 compatible router/mesh to obtain that speed, because Wi-Fi 5 won't.