Router Speed Test (spdMerlin)

[TheLyppardMan]

Just a quick query - I'm wondering why my upload speed varies so much (even in the middle of the night) and yet my download speed is very constant. My router has been automatically running speed tests every half an hour of the last 24 hours and the results show that the maximum upload speed was 826.78 Mbps and the minimum was 346.89 Mbps (the latter was the test result at 5.41 AM this morning). It's no big deal, but I'm just curious as to why could be happening, even when demand on the network would be relatively quiet. Any thoughts?

 

[doczenith1]

Is the speed test server set to automatic? You may just be hitting a slow test server. Try manually setting a test server and see if the results become more consistent.

 

[Tech9]

I would suggest resetting a router and starting over. @TheLyppardMan hasn't done it for a week or so.

 

[TheLyppardMan]

Is the speed test server set to automatic? You may just be hitting a slow test server. Try manually setting a test server and see if the results become more consistent.

Thanks. I did actually do that when I set up spdMerlin. I also reported the issue to my ISP (Zen Internet) and they asked me to reset the ONT and then reboot my router. I did that late this morning and it has already improved things, including the latency. I'm going to leave it running overnight and then send an update to my ISP.

 

[Tech9]

You actually had the same "problem" and asked the same question some time ago:

Upload speeds vary so much, while download speeds are very stable - why?

I have Full Fibre 900 with Zen Internet in the UK (using the CityFibre network). I note that the download speeds are very consistent, but the uploads speeds are not (see attached screenshot). Can anyone tell me why this might be? I have enquired of Zen and this is what they told me: "To answer...

www.snbforums.com

My answer will be the same like before - residential ISP lines are not guaranteed, the speed is "up to". Your speeds are excellent.

 

[TheLyppardMan]

The advice given by my ISP seems to have improved the situation, both the upload speed consistency and the latency.