That single threaded speed seems on the low side although not low enough to be a big problem.

On my gigabit connection my laptop does 400, and my PC over 800 single threaded from TBB.

In reply to a post by XGS_Is_On:

That isn't a thing.

Ok, makes sense. Maybe I'm thinking of some ISPs that had only limited capacity at an exchange point and routed all traffic that way.

But if the processor could only handle 200Mbps on single threaded, it is odd that for x6 is is near 2000 which is equivalwent to ~ 300 on each.

I would just use Task Manager, run the two and see what rough figures are. Then use the TBB down load files - run one alone then 2,3, 4 and see what happens.

In reply to a post by MHC:

But if the processor could only handle 200Mbps on single threaded, it is odd that for x6 is is near 2000 which is equivalwent to ~ 300 on each.

I would just use Task Manager, run the two and see what rough figures are. Then use the TBB down load files - run one alone then 2,3, 4 and see what happens.

Quick test with another device, even a phone on WiFi should be able to sink more than 500Mbps on single thread TBB. will prove or disprove the connection/router is the issue rather than the box running the test.

None of this explains video stream buffering or dropouts though; a 20Mbps line would be able to handle that just fine. The implication is that something is dropping out intermittently, maybe for 5-10 seconds at a time. It could be on Zzoomm's network but could be on the LAN side too.

If you could run two continuous pings:
- one to the router IP on the LAN
- one to somewhere reliable on the Internet (e.g. 8.8.8.8)
that could give some clues, if it shows packet loss around the same time as the video issues.

Doesn’t sound like it’s LAN. OP had said in their second post they are experiencing the same behaviour with PC (Apple? was referred to earlier not sure it’s the same box but anyway) connected direct to ONT.

Therefore it’s either the box running the test or the ONT / Zzoomm network.

In reply to a post by jchamier:

In reply to a post by XGS_Is_On:

That isn't a thing.

Ok, makes sense. Maybe I'm thinking of some ISPs that had only limited capacity at an exchange point and routed all traffic that way.

The transit providers in between ISPs / ASNs charge per megabit per second per month as well as for a port so want ISPs to use as much capacity as possible as it's how they make their money.

ISPs with limited capacity at exchanges will generally move traffic around so that is uses alternative paths. Given the options people have in the UK shaping for the sake of the pretty minimal cost the transit and peering comes in at is a bad idea. Way more expensive to get the customer traffic to the edge than to get shot of it.

In reply to a post by lewisp8:

I've recently switched to a 2Gb symmetrical FTTP broadband connection from a provider called ZZOOMM, the speeds are very good as you can see below, although I note on TBB speed checker the upload is always low, must be a 1Gb connection on TBB's side? Anyway, since switching web pages seem to load very slow, and Netflix and streaming services seem to buffer or go to low quality mode, this is despite me getting claimed speeds in excess of 2Gb/s on Netflix's fast.com.. Can anybody give me any pointers? Latency seems fine as well everything seems fine but real world responsiveness on the web is poor?

Please use this instead: http://embeddable-speedtest.samknows.com/ and post back result

In reply to a post by XGS_Is_On:

Way more expensive to get the customer traffic to the edge than to get shot of it.

ah-ha, okay, so issues much more likely to be inside an ISP network than on the border. Thanks!

In reply to a post by jchamier:

In reply to a post by XGS_Is_On:

Way more expensive to get the customer traffic to the edge than to get shot of it.

ah-ha, okay, so issues much more likely to be inside an ISP network than on the border. Thanks!

100%. Looking at the BT Wholesale price list it's 10s of Pounds a megabit a second a month though I'm quite sure ISPs don't pay close to list price. Collecting data from all over the country, sometimes from relatively remote places across relatively small links, is way more expensive than moving it across big links and fibre backbones. Shifting 5 Mb/s from the Isle of Skye to London across a gigabit or 10 Gb link is more expensive than shifting 5 Mb/s to Australia across huge amounts of capacity leased on multi-Tb capable fibre. Even as a single user I only pay 70p/Mbps/month for transit and peering.

Economies of scale and all that. The bigger the pipe your traffic is riding on the more customers the cost of that pipe is split between.