Low frame rate on Shield with HDHR, TVE is good

When watching sports from OTA HDHR Extend on the Shield, it looks like the frame rate is low. The action is blurred and almost looks like an old recording. When I switch to a sports channel from TVE, or the same channel watching through YTTV, it looks fine. Any ideas?

What transcoding mode is the EXTEND set to in the app settings area?

You can try switching Decoder to Software to see if that makes any difference.