OK, but is that on the personnel, tackling, or scheme? I do believe Norton is over his head as a DC, he is very poor at adjusting his D to counter what is working against it.
Please indicate your specific concerns, it’s clear they are giving up lots of yardage.
To me, the DBs are not playing press and man enough, the OLBs are playing off and in zone coverage too and are tackling poorly, there are far too many missed or broken first tackles which are happening beyond not at the LOS. They are inconsistent. Worst of all is the seeming invisibility of the Leo and any interior pass pressure. I truly believe the only DLine players who have shown much of anything are Clowney and Jefferson.
The team plays a soft zone coverage and are not often beaten over the top, but when they are the results are dramatically awful, T2 showed us some ugly instances. This is intentional but allows teams to have free releases from the LOS. The worst part of that is when a solid RAC player like Julio or Evans shows up the opposition eats the D’s lunch all day. Of course both those players are amazing at catching contested balls as well. Too me scheme is a problem and tweak tackling demonstrates poor positional coaching.