[mythtv-users] Can HDMI Make EPG Navigation Sluggish?

[The GUIGuy]

I wrote:
> Today I connected our LG LCD screen through DVI-I (NVIDIA 7200GS) > HDMI 
> today.
> 
> No problems, except now navigating the EPG is sluggish and at times 
> unresponsive for extended periods.
> 

I've been trying to get a handle on this today (It's a wet and cold 
Sunday here ;) ).

Running "top" shows that xorg is using 100% of the CPU when output is 
via HDMI. On VGA it's indicating 12% to 45% CPU usage.

Should HDMI output affect CPU usage?

Thanks