SEVERE Intermittent connectivity issues

Hello, I have been having issues for nearly the past year regarding the Internet connection dropping. I consistently lose connectivity every 2-5 minutes and the drop usually lasts between 10-20 seconds (They have lasted upwards of 3 minutes before but that's uncommon). When the disconnects occur, I can still connect with the modem directly through wifi or ethernet, and my "personal" network still works. (I have several devices that connect wirelessly like my tablet & laptop, but my desktop connection is wired, and they all can still communicate). The modem does not restart/reset, or show a loss of connectivity to the internet in the "status lights" on the front, but all devices, whether wireless or "wired" register that no internet connection is available during the drops.

The modem has been replaced by Comcast, and that did not resolve the issue. A tech came out and changed the connector from my supply line to the connector at the pole. That did not resolve the issue. He did note that when he connected to the line outside he was seeing high levels of intermittent what he described as "noise" in the signal.  He did not know how to advise me apart from saying that "It shouldn't be happening". I've spent hours upon hours with customer service online & on the phone, with no resolutions.

The exact same issue had occurred about 5 years ago, and the problem lasted for several months. After several techs came out at that time, I was also told that I had a high level of "noise" in the signal outside the home. The last one to visit back then did work at the pole, but the issue persisted & the local Comcast office just sort of "gave up".  I had spotty connection for several months afterwards, then one day the issue just vanished. 

I do not have cable television or any service apart from internet on my line. There are no splitters in my home. My modem sits approximately 8' from where the cable physically enters my house, and is connected directly with the coax that Comcast ran into the home. The connection is tight, and the connector has been cleaned. 

Here is an example of the connection drops the internet connection monitor program I use registered while i was on my computer for approximately 2 hours this afternoon.  This is actually mild to some periods of connectivity fluctuation. 

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7/8/2020 2:07:21 PM Log Start
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Failure Start Length
7/8/2020 2:11:38 PM 0:00:10
7/8/2020 2:13:43 PM 0:00:11
7/8/2020 2:14:54 PM 0:00:09
7/8/2020 2:18:14 PM 0:00:11
7/8/2020 2:18:53 PM 0:00:11
7/8/2020 2:31:31 PM 0:00:14
7/8/2020 2:36:22 PM 0:00:11
7/8/2020 2:36:54 PM 0:00:13
7/8/2020 2:40:28 PM 0:00:12
7/8/2020 2:43:18 PM 0:00:13
7/8/2020 2:45:40 PM 0:00:13
7/8/2020 2:49:10 PM 0:00:11
7/8/2020 2:52:27 PM 0:00:13
7/8/2020 2:57:02 PM 0:00:11
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7/8/2020 3:01:21 PM Log End
Monitor Duration 0:54:00
Failure Summary:
Count 14
Total Downtime 0:02:50
% Downtime 5.25
Minimum Length 0:00:09
Maximum Length 0:00:14
Average Length 0:00:12
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7/8/2020 3:18:12 PM Log Start
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Failure Start Length
7/8/2020 3:20:44 PM 0:00:12
7/8/2020 3:21:27 PM 0:00:12
7/8/2020 3:21:56 PM 0:00:11
7/8/2020 3:31:03 PM 0:00:11
7/8/2020 3:33:46 PM 0:00:11
7/8/2020 3:35:30 PM 0:00:12
7/8/2020 3:36:25 PM 0:00:11
7/8/2020 3:37:52 PM 0:00:12
7/8/2020 3:40:32 PM 0:00:12
7/8/2020 3:50:54 PM 0:00:13
7/8/2020 3:51:25 PM 0:00:12
7/8/2020 3:52:43 PM 0:00:13
7/8/2020 3:54:13 PM 0:00:12
7/8/2020 3:54:59 PM 0:00:10
7/8/2020 3:55:43 PM 0:00:11
7/8/2020 3:59:14 PM 0:00:14
7/8/2020 4:03:43 PM 0:00:13
7/8/2020 4:06:19 PM 0:00:12
7/8/2020 4:09:10 PM 0:00:12
7/8/2020 4:13:56 PM 0:00:12
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7/8/2020 4:18:13 PM Log End
Monitor Duration 1:00:00
Failure Summary:
Count 20
Total Downtime 0:04:08
% Downtime 6.92
Minimum Length 0:00:10
Maximum Length 0:00:14
Average Length 0:00:12
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