I apologize for the inconvenience.
Just a troubleshooting thought; do you have fresh batteries in the remote control?
As far as becoming sluggish on the internal aspect, I'm not sure why the navigation would slow down.
Recently, my girlfriend and I each bought a Samsung LN52A750 LCD TV. We love it. It's a remarkable set. I have no problems whatsoever with mine. However, my girlfriend has a problem with her remote control/menu navigation.
After using the remote control for a minute or two, the menu navigation goes from working effortlessly, quickly and smoothly, to being extremely sluggish and slow.
What is the cause of this and what would be the remedy?
Any insight would be very appreciated. I'm at wit's end.
Thanks in advance.