I've had 3 technicians come out and they have said nothing is wrong with our house. Our whole neighboorhood has this problem, and I believe it's just TWC throttling our connection.
Sorry, but you need to improve the signal levels first. The DS levelsare marginal and you're also getting some ingress causing the correctables and uncorrectables.
Then there's going thru 2 NAT routers. One needs to be bridged.
That needs to be repaired first before any further trouble shooting is done.