There is a NR for the HR20-23 rolling out now. HR24's NR is getting close, but I think still a couple or more weeks out. Supposedly, there are some MRV tweaks in the updates.
No, its gotta be a MRV bug. When watching on the same unit, the HR24 nails it, the HR22 is a little slow, but the HR22 acts the same on MRV. Different unit, and software that looks the same, but it written from the ground up, just equals kinks. It'll take a good 6 months for them to work the bugs out Im sure, if it's like the HR20.