OK, what did TWC tell you when you called them?
copy and paste your signal level and errror log pages for a start, don't reset the modem, we need to see real history.
Unfortunately trying to figure out what your actual problem may be based on this is like your doctor trying to correctly diagnose your illness based on "It hurts" without any other info.
From TWC to Spectrum
It Has Become a Challenge Now to Watch TV, We never had these problems under TWC and this isn’t specific to one cable box, it’s doing it on both cable boxes. All these problems began after we converted and a major software change happened.
Don't tell me to reset the cable box, we've done that numerous times.
We really hate this new system and doesn’t seem we have a way to fix it now that we’ve converted to Spectrum.
Same problem here as well. On all 3 cable boxes. Picture/sound breaks up pixelates all the time, sometimes to the point where it's unwatchable. I was going to have a serviceman out, but it stopped for a couple of weeks. It's back again now. Never had this issue with TWC.
Sounds like there is likely a signal issue, commonly caused by damage or water on the line. This can also cause the intermittent issue. I would recommend contacting us for a service call to have the signals and equipment checked.
Spectrum Social Media Customer Care
Forums Community Manager
It's a physical line issue. Coax cable, connectors, wiring, etc. all are subject to the elements and WILL FAIL over time. The techs that came out to your apartment likely know exactly what the problem is (the wiring in the apartment building is old and worn out or chewed up by squirrels or water damage) and the landlord probably isn't willing to foot the bill for replacement.