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Bad Internet Connection: dropping signal

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Bad Internet Connection: dropping signal

Please advice, any help is appreciated. I have been having frequent Xfinity internet problems for years, and have been noticing them much more recently since we all work or study from home. I have realized it goes out at least 4-5 times daily. In the past I have upgraded my service, my modem several times, as well as the routers. The internet works fine when it is on (blast speed). I must have made scores of calls to Xfinity, and each time they power cycle my modem and it works fine for some hours, before it goes down again. I power cycle my modem upto 4-5 times a day as well. 2 days back my daughter was taking an online AP exam, and right when she had to submit her final work, the internet went down and she couldn't submit (now she has to retake the exam, which is a shame and demoralizing). I had an ARRIS SB6190 for last 1.5 years, and just changed it yesterday to SB8200 hoping that will help. I have no splitters on my cable (only have internet, no TV). My WiFi router is top line (AmpliFi with mesh network). Despite changing my modem again I still have problems. I called Xfinity/Comcast cordially begging for a service appointment, but was again turned down and told to call ARRIS. ARRIS said the modem has no issues, and the log shows dropped signals. What should I do, when Xfinity won't help?

Here is the modem log from 2 hours ago:

05/15/2020 15:05

74010100

6

"CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 15:05

74010100

6

"CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:59

74010100

6

"CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:59

74010100

6

"CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:57

74010100

6

"CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:56

74010100

6

"CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:56

74010100

6

"CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:56

74010100

6

"CM-STATUS message sent. Event Type Code: 22; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:56

74010100

6

"CM-STATUS message sent. Event Type Code: 20; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:56

74010100

6

"CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:55

74010100

6

"CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:50

84000500

3

"SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:50

67061600

6

"DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:50

2436694066

6

"Honoring MDD; IP provisioning mode = IPv6"

05/15/2020 14:50

82000200

3

"No Ranging Response received - T3 time-out;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:49

82000400

3

"Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:49

82000200

3

"No Ranging Response received - T3 time-out;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:48

74010100

6

"CM-STATUS message sent. Event Type Code: 7; Chan ID: 49 50 51; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:48

82000200

3

"No Ranging Response received - T3 time-out;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;CM-VER=3.1;"

05/15/2020 14:47

74010100

6

"CM-STATUS message sent. Event Type Code: 7; Chan ID: 49 50 51; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=a4:98:13:f9:8e:d9;CMTS-MAC=00:01:5c:62:e6:4c;CM-QOS=1.1;