Please describe "lags" further. Is movement jerky, especially when the camera pans right<->left?You can try adjusting the settings for video playback: do not activate "sync to display", but set to "adjust refresh rate" with "on start/stop". Depending on your tv, you might have to adjust the time for this refresh rate switch.
"Sync playback to display" is disabled
"Adjust display refresh rate: on start / stop"
Where can I adjust the time of refresh rate?