The issue about 1080p in DM365

Hi all:

         I got a problem about my capture and display thread in my application based on DM365.

         When I set the image output to 1080p, I find my output will displays the previous queued frame in place of current queued frame most of the time. However, when I set the image output to 720p or lower, this problem will seldom appear(almost disappear).

         I guess the VPFE driver may cause this problem, but I can't find where. 

         Who can help me to explain this problem or solve it?  

Thanks

Katee