Picture Stuttering on XiD-P Box

Hi,

I am seeing the same activity on my new XiD-P box that @Gov0525 posted last year: 

https://forums.xfinity.com/t5/X1/Stuttering-or-Lag-on-certain-channels/m-p/3186679/highlight/true#M161725

On my Panasonic TC-P54G10 Plasma TV , it seems that when the XiD-P box is set to 1080p60 it triggers the 24p Direct In feature on the TV (which cannot be disabled). This results in a choppy picture especially when watching sports or watching the scrolling bottom text on news channels. Resetting the box fixes the issue temporarily (after reset the 24p Direct In feature is not enabled) but it always returns. Setting the box to 1080i or 720p also fixes the issue. This issue was not present on my previous box (an older version of the Xi3). Is there a possible firmware fix for this issue with the XiD-P box or is this hardware based and I will need to use a different box?

Thanks