c7000-100nas Internet sync problems

I purchased my C7000-100NAS about a month ago. I was going to jack-around with the configuration but opted not to until my unit was broken in. I have TWC 200mbps, using a TIVO Bolt and 2-TIVO MINIs, TWC Cable Card. I get the same Critical Errors that others have experienced but they are not persistent, that is, I get the errors when I reboot the TWC Digital Settop box, but then steady reliable service from the router. My speedtest.net readings are consistantly above 230mbps and no signal drops or errors. Keep in mind, I have only had this configuration for a month. Firmware Version V1.01.15. My errors are below but I do not consider them critical since my 21+ active devices are screaming alone without incident. I love my Netgear Nighthawk at this point but time will tell. It could also be that my local, San Antonio, Texas TWC has it dialed in?

I do have two problems that I would like Netgear to resolve (I don't believe them to be TWC issues even though one of the respondents here suggested that TWC is pushing out a bad local TIME. Nah.):

1. The Nighthawk router Time management issue should be a managable feature. The Router should have a time and time zone configurable option. No excuses, just do it;
2. The Block Sites function does not work properly. That is, it will properly block the DOS attacker but also reduces my broadband download speed from 230+mbps to 50+/-mbps. When I select NEVER block versus ALWAYS, I get my 230+mbps back. The issue has got to be in the router software. I have configured it every which way possible with the same results.

The Error Diagnostic I referred to earlier is below, if anyone cares: