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eng3
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Conversationalist

Frequent Visitor

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9 Messages

Monday, November 20th, 2023 12:40 AM

Closed

Slow down every evening

Internet seems to work fine during the day, but every evening from about 6-midnight, it gets really slow.  Have to lower my youtube stream quality to like 2MB and it will still buffer sometimes.  Comcast's support page speed test shows 200MB, but all other speedtests I try show more like 4MB down.  UP seems normal.

I have an SB8200.

Down:

Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
20 Locked QAM256 567000000 Hz 7.3 dBmV 43.4 dB 124781 445622
1 Locked QAM256 453000000 Hz 7.3 dBmV 44.1 dB 59062 185806
2 Locked QAM256 459000000 Hz 7.2 dBmV 44.0 dB 125168 454888
3 Locked QAM256 465000000 Hz 7.3 dBmV 44.0 dB 104154 361324
4 Locked QAM256 471000000 Hz 7.4 dBmV 43.9 dB 125232 454885
5 Locked QAM256 477000000 Hz 7.6 dBmV 44.0 dB 125893 452811
6 Locked QAM256 483000000 Hz 7.5 dBmV 44.0 dB 125607 450676
7 Locked QAM256 489000000 Hz 7.5 dBmV 43.9 dB 125619 447930
8 Locked QAM256 495000000 Hz 7.5 dBmV 43.8 dB 121787 432971
9 Locked QAM256 501000000 Hz 7.4 dBmV 43.7 dB 124356 440670
10 Locked QAM256 507000000 Hz 7.6 dBmV 43.6 dB 83501 273652
11 Locked QAM256 513000000 Hz 7.8 dBmV 44.0 dB 123006 435851
12 Locked QAM256 519000000 Hz 7.9 dBmV 44.0 dB 122863 433498
13 Locked QAM256 525000000 Hz 7.9 dBmV 43.8 dB 122378 428522
14 Locked QAM256 531000000 Hz 7.8 dBmV 43.7 dB 121776 422602
15 Locked QAM256 537000000 Hz 7.6 dBmV 43.5 dB 121467 417352
16 Locked QAM256 543000000 Hz 7.6 dBmV 43.6 dB 120937 411650
17 Locked QAM256 549000000 Hz 7.7 dBmV 43.7 dB 121452 407043
18 Locked QAM256 555000000 Hz 7.8 dBmV 43.8 dB 119914 403314
19 Locked QAM256 561000000 Hz 7.6 dBmV 43.6 dB 119961 399268
21 Locked QAM256 573000000 Hz 7.3 dBmV 43.4 dB 118864 394336
22 Locked QAM256 579000000 Hz 7.5 dBmV 43.6 dB 118824 389781
23 Locked QAM256 585000000 Hz 7.7 dBmV 43.7 dB 118995 384133
24 Locked QAM256 591000000 Hz 7.7 dBmV 43.7 dB 118709 377760
25 Locked QAM256 597000000 Hz 7.3 dBmV 43.4 dB 118402 373557
26 Locked QAM256 603000000 Hz 7.2 dBmV 43.5 dB 118683 371750
27 Locked QAM256 609000000 Hz 7.3 dBmV 43.5 dB 117428 371876
28 Locked QAM256 615000000 Hz 7.8 dBmV 43.7 dB 118759 367267
29 Locked QAM256 621000000 Hz 8.1 dBmV 43.9 dB 118710 361168
30 Locked QAM256 627000000 Hz 7.8 dBmV 43.3 dB 119348 354079
31 Locked QAM256 633000000 Hz 7.4 dBmV 43.4 dB 118941 346940
32 Locked QAM256 639000000 Hz 7.4 dBmV 43.6 dB 118985 346622
193 Locked Other 957000000 Hz 7.6 dBmV 41.2 dB 492522742 60085

Upstream

Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 17 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 41.0 dBmV
2 18 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 41.0 dBmV
3 19 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 41.0 dBmV
4 20 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 41.0 dBmV
I remember when they first installed, they put in an in-line attenuator.  Then when I had issues a guy came and removed it.  A few years back they replaced the cable going to my house

Question

 • 

Updated 

1 year ago

 • Edited

63

2

0

eng3

Frequent Visitor

 • 

9 Messages

1 year ago

Tried adding the 3dB attenuator back on.  Maybe slightly better.

Downstream:

Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
20 Locked QAM256 567000000 Hz 4.1 dBmV 42.8 dB 125234 447293
1 Locked QAM256 453000000 Hz 4.0 dBmV 43.4 dB 59942 186459
2 Locked QAM256 459000000 Hz 4.0 dBmV 43.4 dB 128787 459952
3 Locked QAM256 465000000 Hz 4.2 dBmV 43.2 dB 107580 366243
4 Locked QAM256 471000000 Hz 4.2 dBmV 43.2 dB 128735 460429
5 Locked QAM256 477000000 Hz 4.3 dBmV 43.4 dB 129539 458766
6 Locked QAM256 483000000 Hz 4.3 dBmV 43.4 dB 129298 456551
7 Locked QAM256 489000000 Hz 4.3 dBmV 43.3 dB 127902 451013
8 Locked QAM256 495000000 Hz 4.3 dBmV 43.2 dB 158921 447122
9 Locked QAM256 501000000 Hz 4.2 dBmV 43.0 dB 127740 445320
10 Locked QAM256 507000000 Hz 4.2 dBmV 43.1 dB 86997 279293
11 Locked QAM256 513000000 Hz 4.3 dBmV 43.1 dB 126609 441938
12 Locked QAM256 519000000 Hz 4.6 dBmV 43.3 dB 126627 439164
13 Locked QAM256 525000000 Hz 4.5 dBmV 43.1 dB 123811 431471
14 Locked QAM256 531000000 Hz 4.4 dBmV 43.1 dB 123580 425013
15 Locked QAM256 537000000 Hz 4.2 dBmV 43.0 dB 124768 422139
16 Locked QAM256 543000000 Hz 4.2 dBmV 43.1 dB 124366 417264
17 Locked QAM256 549000000 Hz 4.3 dBmV 43.0 dB 122278 407737
18 Locked QAM256 555000000 Hz 4.3 dBmV 43.1 dB 133173 454107
19 Locked QAM256 561000000 Hz 4.2 dBmV 42.9 dB 122489 401696
21 Locked QAM256 573000000 Hz 4.1 dBmV 42.9 dB 133432 436962
22 Locked QAM256 579000000 Hz 4.2 dBmV 43.0 dB 121931 394274
23 Locked QAM256 585000000 Hz 4.3 dBmV 43.0 dB 121708 387522
24 Locked QAM256 591000000 Hz 4.2 dBmV 43.0 dB 122510 380529
25 Locked QAM256 597000000 Hz 4.1 dBmV 42.8 dB 121722 377308
26 Locked QAM256 603000000 Hz 4.1 dBmV 43.0 dB 121759 375082
27 Locked QAM256 609000000 Hz 4.3 dBmV 43.1 dB 120831 375996
28 Locked QAM256 615000000 Hz 4.4 dBmV 43.1 dB 122148 372351
29 Locked QAM256 621000000 Hz 4.6 dBmV 43.1 dB 133233 433522
30 Locked QAM256 627000000 Hz 4.4 dBmV 43.0 dB 120173 357634
31 Locked QAM256 633000000 Hz 4.5 dBmV 41.4 dB 119741 348108
32 Locked QAM256 639000000 Hz 4.5 dBmV 43.2 dB 127059 375048
193 Locked Other 957000000 Hz 3.8 dBmV 40.8 dB 492768518 80711


Upstream
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 17 Locked SC-QAM Upstream 16400000 Hz 6400000 Hz 44.0 dBmV
2 18 Locked SC-QAM Upstream 22800000 Hz 6400000 Hz 44.0 dBmV
3 19 Locked SC-QAM Upstream 29200000 Hz 6400000 Hz 44.0 dBmV
4 20 Locked SC-QAM Upstream 35600000 Hz 6400000 Hz 44.0 dBmV

1

0

XfinityAnthonyT

Official Employee

 • 

1K Messages

Hey there, happy to look into this for you. Please send a DM to XFINITY SUPPORT with your name and address to get started.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

1 year ago

0

EG

Expert

 • 

110.3K Messages

1 year ago

@eng3 @XfinityAnthonyT 

Please circle back here and post any possible solutions for the issue here in these open forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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