Still having intermittent issues

You can see more details on my previous post here but my issues are not resolved. I have had technicians come out and the issue remains. I even tested using a COX modem to rule out the equipment being the source since that is the scapegoat for the phone/chat support and technicians. And after 2-months, the issue was the same. However, with the Cox modem, I am limited to what I can access in the GUI and reported errors or issues - this is just one of the reasons I do not lease ISP equipment.

When the issue happens, the actual internet "connection" would remain, but devices would stop loading content and connections to online game networks and zoom/Teams would drop. Give it a few moments, and it would come back but usually I was already disconnected from the game or call and have to refresh any pages or apps trying to load. I work from home and when these issues happen, it is quite frustrating since I am hosting them most of the time. 

I do not have gigablast and am told that the OFDM channel is not used, however, that seems to be the culprit causing so many issues. Do I need to upgrade to gigablast so they fix the issue with that OFDM channel, then downgrade afterward? Or can they disable the channel completely? Or will someone actually fix the problem?

I shouldn't have to spend so much time capturing the errors but modem firmware does not have a way to export errors and only keeps up to the last 42-event log entries. So if I don't copy what is logged every hour or 2, it is lost. Here's the history of just the last 2 months....again...only when I have been able to copy and manually log them.