Nighthawk C7100V Slow wired connection

[User0]

Hello,

I have a problem with my wired connection on a C7100V. I've reset all Network Adapters and talked to my ISP (Xfinity) for hours yesterday trying resolve the issue. They said it was the modem, so here I am asking you fine people for help. I attempted to find the answer without writing one of these but failed to find an answer. 

1. 

Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

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<tabindex=-1>Startup Procedure</tabindex=-1>

Procedure	Status	Comment
Acquire Downstream Channel	549000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Configuration File	OK	------------
Security	Enable	BPI+

---

<tabindex=-1>Downstream Bonded Channels</tabindex=-1>

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	21	549000000 Hz	2.1 dBmV	38.3 dB	0	0
2	Locked	QAM256	1	411000000 Hz	1.4 dBmV	38.7 dB	0	0
3	Locked	QAM256	2	417000000 Hz	1.4 dBmV	38.8 dB	0	0
4	Locked	QAM256	3	423000000 Hz	1.4 dBmV	38.8 dB	0	0
5	Locked	QAM256	4	435000000 Hz	2.1 dBmV	39.1 dB	0	0
6	Locked	QAM256	6	453000000 Hz	2.2 dBmV	39.2 dB	0	0
7	Locked	QAM256	7	459000000 Hz	2.3 dBmV	39.3 dB	0	0
8	Locked	QAM256	8	465000000 Hz	2.5 dBmV	39.3 dB	0	0
9	Locked	QAM256	9	471000000 Hz	2.8 dBmV	39.4 dB	0	0
10	Locked	QAM256	10	477000000 Hz	2.7 dBmV	39.3 dB	0	0
11	Locked	QAM256	11	483000000 Hz	2.6 dBmV	39.3 dB	0	0
12	Locked	QAM256	12	489000000 Hz	2.5 dBmV	39.2 dB	0	0
13	Locked	QAM256	13	495000000 Hz	2.5 dBmV	39.2 dB	0	0
14	Locked	QAM256	14	507000000 Hz	2.7 dBmV	36.6 dB	0	0
15	Locked	QAM256	15	513000000 Hz	2.5 dBmV	38.9 dB	0	0
16	Locked	QAM256	16	519000000 Hz	2.3 dBmV	38.8 dB	0	0
17	Locked	QAM256	17	525000000 Hz	1.5 dBmV	38.8 dB	0	0
18	Locked	QAM256	18	531000000 Hz	1.3 dBmV	38.6 dB	0	0
19	Locked	QAM256	19	537000000 Hz	1.0 dBmV	38.6 dB	0	0
20	Locked	QAM256	20	543000000 Hz	1.3 dBmV	38.5 dB	0	0
21	Locked	QAM256	5	447000000 Hz	1.8 dBmV	39.4 dB	0	0
22	Locked	QAM256	22	555000000 Hz	1.6 dBmV	38.2 dB	0	0
23	Locked	QAM256	23	561000000 Hz	1.4 dBmV	38.2 dB	0	0
24	Locked	QAM256	24	567000000 Hz	1.0 dBmV	37.8 dB	0	0

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<tabindex=-1>Upstream Bonded Channels</tabindex=-1>

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	3	5120 Ksym/sec	29200000 Hz	42.3 dBmV
2	Locked	ATDMA	1	5120 Ksym/sec	16400000 Hz	42.3 dBmV
3	Locked	ATDMA	2	5120 Ksym/sec	22800000 Hz	42.3 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	35600000 Hz	42.3 dBmV
5	Locked	ATDMA	5	2560 Ksym/sec	40400000 Hz	39.3 dBmV
6	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
7	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV
8	Not Locked	Unknown	0	0 Ksym/sec	0 Hz	0.0 dBmV

2. No the issue does not happen on my Phone over wifi. I turn off Cell data and get speeds close to 300. I have also tried to use the wifi on my computer to by pass the wire to see if that helps. It does not... Which made me think it was a setting on my PC so I reset all Network Adapters and it's not any better. Right now i'm receiving speeds under 1MB and upload just over 1MB wired. Computer is brand new just like everything else. 

3. I pay for 1GB I would be happy with anything over 100 as it's just me using it. I know i should down size and I might.

4. Speeds Wired Under 1MB upload and just over 1MB download. Wifi speeds on phone with DATA off are over 300MB

5. No splitters or anything between the wall and my router. Coax is connected firmly on both ends. I receive the speeds acceptable on phone so i'm assuming it's the modem or the PC.

[plemans]

Do you have another wired device you could test? 

How are you testing? using the app? using the speedtest app?

Your power levels look pretty good but the logs tell us more. 

[User0]

Speedtest.net is how i'm testing. I do not have another device to test with. I'm about reinstall windows as I dont have alot on the PC being new anyways. Hoping that fixes it.

[plemans]

the goal is to figure out which is causing the issue. 

No other hardwired device? 

Or even a laptop you could borrow to test speeds? 

Or potentially a usb---ethernet adapter to try?