Several one minute outages each day

I’m in SoCal having the same issue most of June. Initially it was shorter like you said, and didn’t happen as much, but frequency and duration are increasing over time. Last night it was 2+ hours of about 0.19mbps download speed. Technical support tells us we have “one of the slowest internet packages” at 1G and says please confirm I’ll upgrade you to 2G. Then tries to sell me Cox Care super service. Then says contact the device manufacturer even though it’s not device specific and we have several speed tests. I’m looking into Verizon internet but concerned about their speed as well.