Trying to identify cause of network buffering - direct vs powerline connection?

dadslo

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Nov 28, 2017
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Hi all – first post here, so apologies if I am in the wrong place.

My question is whether connecting my TV streaming device to my TalkTalk fibre router/modem via a powerline socket could be the cause of a performance degradation compared to a direct connection?

The problem I have noticed is that when streaming TV content (via an Nvidia Shield) I can get buffering/pauses in play with TV episodes (file size >800Mb) but not if I select a smaller stream (~400Mb).

This suggests to me my internet speed is too slow, or my streaming device is not very good. However I get a constant >50mbps result from SpeedTest, which should be sufficient for 4K streaming content let alone these 720/1080 streams, and the Nvidia Shield is amongst the best there is, so it can’t be either of those factors.

In fact none of my equipment should in themselves be the source of the issue – I have Devolo’s latest 1200+ powerline socket with GB ethernet cables and their Cockpit software tells me it is connected at 600mbps. The TalkTalk router/modem is what it is (rubbish) but I wouldn’t imagine is having any impact on this particular issue.

I suppose it could be the source of the stream itself, but I will need to wait for my new 4K OLED TV to turn up in a couple of weeks so I can test more streaming content to rule out whether the quality of sources are the cause of the issue I am experiencing.

I am just worried that having bought a 4K TV and Nvidia streaming device, I won’t be able to stream larger 4K content. Netflix suggests you need a 25mbps connection for 4K streaming and I have double that.

I was considering drilling a couple of holes in external walls to take a network cable outside (10 metre weatherproof cable) and connecting the Shield directly to the router to see if this would improve matters, or make no difference whatsoever (this my suspicion) – and wanted to get some professional opinions that could save me some cost, a couple of holes, and a very miffed wife…!!

I can of course connect the Shield to my WiFi, but always assumed that a wired connection would be faster/more reliable/less prone to interference and congestion of other devices sharing the WiFi, like phones and tablets.

A separate question – my new kit means I now need more network connection than my Devolo powerline socket currently providse, so was planning to introduce an 8-port unmanaged Netgear switch out of the powerline socket. I assume this is OK and will have no impact on speed/performance of the required network connections?

Cheers guys – Kevin.
 
Do get the 50mbps speedtest results through the powerline or is this on a different connection. If you get good speedtest numbers through the powerline units they likely are ok. Watch the graph it needs to be fairly steady with no pauses.

Powerline connections can have interference from stuff in your house but it is not as common as say wifi.

Before you get real ambitious with drilling holes why not just run a ethernet cable over the floor just to test. It will likely quickly show if the powerline is causing the issue.

There are so many variables when you stream video it is hard to tell which is causing the issue.
 


Hi - yes i can get 50mbps SpeedTest result from a PC plugged into that powerline socket, and also via the SpeedTest app on the Nvidia Shield plugged into the same.

I guess that demonstrates that maybe a direct connection to the router won't improve speed, but unsure about stability.

I can buy a 20M lead and actually have an evening's viewing with the Shield directly plugged into the router and try out some large files. I can also try its WiFi connection - again, if it can match the 50mbps speed, it is then all about stability of that connection?

I always also have IPVanish when i stream. Whilst stability of the VPN connection could be a factor, i would argue that i never see any connection/buffering issues when streaming the smaller, 400MB files and connected to the VPN.

Thanks for your consideration dude.