Very High Uncorrectables (millions) on some channels, coincides with poor service/experience.

I recently moved (not an apartment) and had my services transferred. I've been experiencing very poor internet service (pages fail to load, videos time out, DNS requests will fail on wired desktops, and a wired Speed Test will report well-below the advertised "Up to 100Mbps" of my service level. For example, today I tested 10Mbps down, and a second test returned 5Mps down, conversely upstream is always a solid 10Mbps every time I've tested which leads me to believe this is a channel-specific or other communications issue which Cox can diagnose/correct.

I own a SBG6580, I have the wireless disabled since there have been problems with the wireless function interfering with overall WAN performance, at my prior address this Modem served me well for over a year so I have no reason to believe it's the device causing the problem:

```
Information

Standard Specification Compliant DOCSIS 3.0
Hardware Version 3
Software Version SBG6580-3.5.8.4-GA-00-505-NOSH
Cable Modem MAC Address 7c:bf:b1:c3:2c:34
Cable Modem Serial Number [------ -.- ------]
CM Certificate Installed

Status
System Up Time 0 days 00h:12m:02s
Network Access Allowed
Cable Modem IP Address ---.---.---.---
```

Sometimes a reboot will work, sometimes a reboot seems to have no effect and another reboot seems to be required. I check the cable modem QAM connection stats every time and notice some channels look "ok", while others show uncorrectables numbering in the millions.) I feel like maybe there are bad channels, is it possible to reprogram the cable modem to avoid/not use them? :(

At this point a modem reboot feels like only a temporary fix. We no longer wonder "if" we will need to reboot the modem but "when".

Thoughts? Is there anything I can do to help diagnose or correct the issue? I've moved the modem to different cable outlets inside my home, I've crimped a fresh connector at one output Thursday(-ish) to rule out bad crimps/leads inside, I also inspected the exterior of the home for any damaged cables, exposed terminals, junk splitters, corrosion, etc but I can't find anything wrong, maybe a tech needs to come out and do a line test or inspection of Cox hardware outside?
 

Thanks in advance,
Shaun