The new plug-in solved several problems including remote control problems. Thanks for stuffs' efforts.
However, the new plug-in created the bit-rate fluctuation problem. The bit-rate is 2~3000 kbps during watching TV. However, it suddenly drops down to ~300 and than back to normal in a minute. During this period, the picture and sound were interrupted.
This problem was happened at high frequency especially in the evening (every few minutes!!). I checked wi-fi connection at www.speedtest.net but no fluctuation was found both in download and upload.
I hope you could fix this serious problem asap.