Gig1 Slow Speeds - Always around 500Mbps

[Dayvey]

Hi,

In the past week I have been upgraded to Gig1 fibre with Virgin and since then I haven't been seeing anywhere near the speed it should be.

Speed tests taken across 4 devices (2 PCs, S21 Ultra 5ghz, ASUS router) all show between 400 - 500 Mbps. I've had an engineer visit and replace the cables in my house and replaced the Hub 4 but still no improvement. On SamKnows it states that 920 Mbps is getting to the router but to the PC only showing 96 Mbps. One PC is connected via 30m Cat5e and network adapter showing 1 Gbps connection, and the second PC is connected via 1m Cat6a with network adapter showing 1 Gbps connection.

Below are the power stats from the Hub 4, could someone advise if these are within normal range as I can't think what else the issue could be

3.0 Downstream channels

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

25	330750000	7.5	40.4	QAM256	25
1	138750000	8.9	40.4	QAM256	1
2	146750000	9.3	40.4	QAM256	2
3	154750000	9.6	40.4	QAM256	3
4	162750000	9.4	40.4	QAM256	4
5	170750000	9	40.4	QAM256	5
6	178750000	8.9	40.4	QAM256	6
7	186750000	8.7	40.4	QAM256	7
8	194750000	8.6	40.4	QAM256	8
9	202750000	8.2	40.9	QAM256	9
10	210750000	8.3	40.9	QAM256	10
11	218750000	7.9	40.9	QAM256	11
12	226750000	7.9	40.9	QAM256	12
13	234750000	7.8	40.9	QAM256	13
14	242750000	8.1	40.4	QAM256	14
15	250750000	7.9	40.4	QAM256	15
16	258750000	8.3	40.4	QAM256	16
17	266750000	8.4	40.4	QAM256	17
18	274750000	8.6	40.9	QAM256	18
19	282750000	9	40.9	QAM256	19
20	290750000	8.9	40.4	QAM256	20
21	298750000	8.8	40.4	QAM256	21
22	306750000	8.2	40.4	QAM256	22
23	314750000	7.8	40.4	QAM256	23
24	322750000	7.5	40.4	QAM256	24
26	338750000	7.3	40.9	QAM256	26
27	346750000	7.4	40.9	QAM256	27
28	354750000	7.4	40.4	QAM256	28
29	362750000	7.5	40.4	QAM256	29
30	370750000	7.4	40.4	QAM256	30
31	378750000	7.4	40.4	QAM256	31

[Dayvey]

Additionally

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

33

Locked

42

7.5

4998899

0

[Andrew-G]

High 80s to mid 90s speeds suggest that somewhere the ethernet protocol is dropping back to 10/100 rather than 100/1000.  It's not clear from the description if you're running in modem mode, if you are then it points to the cable between hub and your own router?

[Dayvey]

Hi,

Thank you for your reply, this happens in both Router and modem mode.

In modem mode I have the Hub4 connected via Cat6 to an Asus RT-AC88U, with the Cat5e and Cat6a cables going from that to my devices. But I have also tried the same cables in Router mode connected directly to the Hub4

[Dayvey]

This is from the ASUS hub, showing that WAN is Gigabit and both PCs connected on 1 and 2 are also gigabit, LAN 3 and 4 are my PS5 and Smart TV respectively

[Dayvey · Accepted solution]

This issue has now been solved, I gave my PC a fresh install of Windows this morning and speed tests are now showing in the 900+ Mbps range

Issue must have been caused by some legacy setting somewhere within Windows that capped the speed

[Serena_C]

Hi @Dayvey

Thanks very much for getting back to us to keep the thread updated. I'm really glad to hear that the issue has now been solved and you are enjoying superfast 900+Mbps speeds now.

If you experience any further issues please do get in touch.

Kind regards,

Serena