why does CPU usage up to 90 percent when I am doing a direct cable connection to my laptop?

[CyberTiger]

does anyone know why does CPU usage up to 90 percent when I am doing a direct cable connection to my laptop?

 

[CyberTiger]

anyone?

 

[aUt0eXebat]

my guess is that it takes alot of CPUage to compress and send the data over that little line, just like it uses alot when you print using a paralell port