Replacing Sky Router

[Timberflake]

@mae-3 @cookiemonsteruk Me again!

Having a weird issue! Everything set up and working perfectly last night, getting 900+Mbps wired directly through the router and through the switch. Tested on multiple devices, Macbook Air, Mac Studio, Apple TV and PS5, worked flawlessly!

Today however, wired speeds have dropped to around 400Mbps, even when plugged directly into the router. Power cycled the router, made no difference. My wireless speeds are currently slightly fast than wired (worst case they're almost identical). I'm not really sure where the issue could be?

[mae-3]

@Timberflake 

Sounds like a throughput fault with Sky.

[Timberflake]

Interestingly, if I run a Speedtest using "Internet speed" through the ASUS router app I get excellent results; 925Mbps down/111Mbps up, not sure what's going on 

[mae-3]

@Timberflake 

That would rule out a Sky fault,

What release of firmware on the Asus router and is it the latest?

[Timberflake]

Firmware has been updated last night to 3.0.0.4.388_23285

[jamesn123]

@Timberflake 

To me that sounds like a device is using the bandwidth so you can't run a speedtest at full speed.

[Timberflake]

But wouldn't that affect wireless speeds too? 

[jamesn123]

@Timberflake 

Yes it would but you said wired speeds were around 400mbps & wireless was only slightly faster whereas the Asus test is the full 900. When you run the Asus test it reserves all bandwidth for itself so if your speeds are lower than the Asus test it suggests there is a device on your network using that bandwidth

[Timberflake]

But there's nothing on the network rinsing that much bandwidth 

[jamesn123]

@Timberflake 

Well that was the main question, are you sure there isnt? Have you checked them for background downloads, cloud syncs, upload tasks etc. Is there any bandwidth use on the Asus overview page?

[Timberflake]

Real time traffic stats in the ASUS app shows total downward traffic 3-4 Mbps, mostly over the WAN 

[Timberflake]

So I've found the problem, I disabled QoS and instantly saw speedtests and downloads return to 900Mbps!

[jamesn123]

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@Timberflake wrote:

So I've found the problem, I disabled QoS and instantly saw speedtests and downloads return to 900Mbps!

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That would make sense!