Gigablast high number of corrected errors

So I subscribed to Gigablast, but am only getting about 250mbps down. I'm using the SB8200 modem. The signal levels look ok, however i get an extremely high number of corrected errors. Hundreds of millions after 30 minutes of resetting the modem. Looking up on how these errors are corrected, it would appear there are so many packets that need to be corrected, that it's bottlenecking my bandwidth trying to correct them. See image below.

Am I correct in this assessment?

It should also be noted that a tech came out and said he will be replacing the line to my apartment this week and see if that's the issue.

Just looking to get an opinion that may be more knowledgeable than mine.

Thanks