500mbps only giving 80mbps

[tunsh]

I used to easily get 500mbps and would sometimes peak into 600mpbs and now for the past 2 weeks I've only been getting 80mbps with no changes since I first got the router.

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	195000000	2.5	40	256 qam	8
2	139000000	4	38	256 qam	1
3	147000000	3.7	38	256 qam	2
4	155000000	3.4	40	256 qam	3
5	163000000	3.2	40	256 qam	4
6	171000000	3.2	38	256 qam	5
7	179000000	3.2	40	256 qam	6
8	187000000	2.9	40	256 qam	7
9	203000000	2.5	40	256 qam	9
10	211000000	2.5	40	256 qam	10
11	219000000	2.2	38	256 qam	11
12	227000000	2	38	256 qam	12
13	235000000	1.9	40	256 qam	13
14	243000000	1.7	40	256 qam	14
15	251000000	1.5	38	256 qam	15
16	259000000	1.9	38	256 qam	16
17	267000000	2.4	38	256 qam	17
18	275000000	2.4	38	256 qam	18
19	283000000	2.7	40	256 qam	19
20	291000000	2.9	40	256 qam	20
21	299000000	4.1	38	256 qam	21
22	307000000	3.5	38	256 qam	22
23	315000000	3.7	38	256 qam	23
24	323000000	3.7	38	256 qam	24

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	40.3	4	0
2	Locked	38.9	0	0
3	Locked	38.9	5	0
4	Locked	40.3	4	0
5	Locked	40.3	0	0
6	Locked	38.6	0	0
7	Locked	40.3	16	0
8	Locked	40.3	18	0
9	Locked	40.3	5	0
10	Locked	40.3	6	0
11	Locked	38.9	6	0
12	Locked	38.9	5	0
13	Locked	40.3	5	0
14	Locked	40.3	5	0
15	Locked	38.9	0	0
16	Locked	38.9	7	0
17	Locked	38.9	6	0
18	Locked	38.9	6	0
19	Locked	40.3	4	0
20	Locked	40.3	0	0
21	Locked	38.9	0	0
22	Locked	38.6	4	0
23	Locked	38.6	5	0
24	Locked	38.9	1	0

[jbrennand]

On what device ? Connected on wifi or ethernet? If ethernet then the cable may have failed and defaulted to 10/100. Or the Network card may have done the same - check in network settings.

If wifi - a shift from connecting on 5GHz to 2.4GHz would result in that speed drop - so can you check that?

[tunsh]

ethernet to my desktop and the cable isnt the problem as i used a brand new cat6 cable and the same thing happened

[RR-IT-GUY]

Funny you mention this as I was looking over my samknows whitebox data and can see my speeds have dropped since two weeks now, from 550Mbps to around 178 - 200. No clue why but I was about to post when I saw this one.

It varies my end, what I don't get is that speedtest.net is showing 550Mbps and that all the samknows tests are slower or vary from one second to the next. For me this started when there was a power cut (although my kit stayed on for a little while due to a UPS, but then went off as the powercut lasted hours.

[jbrennand]

Can you check speeds like this to see what VM are delivering to the Hub
_____________________________________________________________

As you expect >100Mbps then connect a 1GB enabled computer/laptop, with up to date drivers, via a NEW and working Cat5e/6a ethernet cable, directly to the Hub which you have put into “modem mode”

(https://www.virginmedia.com/help/virgin-media-hub-modem-mode ).

This ensures that NO other devices are connected

Test speeds at https://speedtest.samknows.com/ - try on 2 different browsers as Chrome sometimes gives odd results.

If they are still low – boot your device into Windows safe+networking mode - to disable any potentially interfering software - and try again.

There are many posts on here (I have a list of ~30!) where QoS software, anti-virus, unknown/flaky software, old network card drivers, corrupted browsers, bad cables or other connected devices are limiting speeds on tests.

Report back what that gets. For examples of why... see message 7 in the first thread and 9 in in the second and 3 in the third

https://community.virginmedia.com/t5/Speed/HUB-5-and-IGB-wifi/td-p/5088163

https://community.virginmedia.com/t5/Networking-and-WiFi/Slow-Ethernet-Speed/m-p/5060946#M484321

https://community.virginmedia.com/t5/Speed/Upgrade-from-M600-to-Gig1-no-speed-change-with-Hub-4/td-p...