You shouldn't be seeing that type of erratic behavior. If your neighbors are experiencing similar issues, then the problem probably lies in the infrastructure in your neighborhood. A damange trunk line or faulty equipment is probably the cause.
Have you scheduled a field tech visit? As long as you've made sure your home wiring is in good shape, any problem must lie elsewhere.
Your numbers look good this time, all are within specs. However, you should call Spectrum so they can look for errors received on the US at their CMTS server end.
Like @dstoffa I am suspicious that the bucket truck crew will find an intermittent connection in the overhead plant near your home that wiggles in the wind and shifts the line levels enough to force new autoranging in both directions, or an amp or tap housing that sometimes fills with water. BT,DT!
Just had a thought when talking to someone about the streaming plans...
...wonder if the broadcast trap could be impacting things?
IDK the details on the range it filters and whatnot, but remember they came out and put something on the line out in that green box when we cut off broadcast cable (we used the $15 deal for the basic locals for a while before going fully to OTA and streaming only).
That's a good point to remember when the next tech visits: If Spectrum has switched to fully encrypted 256 QAM digital in your area, the legacy "basic broadcast trap" is no longer needed and should be discarded. It can cause an intermittent signal loss when it is exposed to water.