I have updated the latest Enjoy TV New Android 2.3 Firmware Version.20120111. Everything is fine. It is no longer lagging anymore during using air mouse to control the app.
But one thing should improve about videoplayer apk,its font size of subtitles film should be changed any size you want (maybe the maximum > 50 ). Because the current maximum size is only 30, too small to watching it on big Screen TV.