Superhub 3 modem mode with Nighthawk R8000 slow speedtest 200mbps on M500

[Brungle]

Hi,

After much frustration with the poor performance of the SH3 I purchased a Netgear Nighthawk R8000 and I'm now running the SH3 in modem mode.

The speed test (which you can carry out within the R8000 web interface itself so its not a wifi issue) is giving me under 200mbps (its actually now 86mbps at time of writing!) despite being on on the 500mbps package. I've tried 3 different cables between the R8000 and the SH3, cat5, cat5e and cat6. I've now ordered a cat7 to try also.

Can someone from virgin media support advise what the issue is? I have powered off other wifi devices during this test.

The online checking service says everything is fine.. 

The SH3 is coming up to a year old, can you arrange for a replacement to be posted out?

Thanks

[Scott_B · Accepted solution]

Hi.
What speeds do you get when you run a speedtest direct from the hub on ethernet?

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Thanks Scott

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[gary_dexter]

What speed do you get if you remove the router and plug straight into the Virgin hub?

[Brungle]

210mbps down 37mbps upload plugged directly into SH3 in modem mode.

[Scott_B]

Hi.
Send me a pm with postcode, account number and area code if you know this and I will look into it for you.
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If my answer was helpful to you please mark you post as helpful answer and consider leaving kudos.
Thanks Scott

Want to do right by your nearest and dearest and both earn a £50 credit off your bill? It's simple, Just text ‘RAF 92082 to 80011 with your postcode, account number, friend's name and phone number, so we can call them now.

[Brungle]

Message sent thanks

[gary_dexter]

Are you sure you’re on the 500Mbps package?

[Brungle]

 yes 100% certain

[Brungle]

so virgin engineer has been today, changed some connectors etc, I can get full speed stood next to the SH3 when in router mode with my phone on 5g wifi.
When I put the SH3 in modem mode it won't go over 200, both ethernet connected directly to a laptop or through the R8000!
Why is the SH3 slower in Modem mode than it is in Router mode?
Seems to be many people complain about this and no actual answer?

I wan't to wifi features of the R8000, as the SH3 wifi cannot handle the number of devices.

[SCA1972]

Try running the speed test on the laptop direct to the hub with the Windows Task Manager open on the performance tab and see if your CPU is maxing out.

I have seen a customer on here unable to get 500Mbps due to their CPU maxing out.

______________________
Scott

My setup: V6 TV box, M350 Fibre broadband with Hub 3 in modem mode connected to a Netgear R7000 router. Telewest/VM user since 2001.