Lag when hooking computer to T.V. via HDMI

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Whiskey hooking there computers up to there T.V.'s for next gen console experience, I decided I wanted to give it a try. My video card is a ATI 6970 and my T.V. is a Samsung DLP capable of 1080i. I bought a 25 foot HDMI cable from Monoprice and made sure it was of the thicker diameter for being such a long cable. Plugged everything in and it worked great and looks great. The only problem is that there is input lag in the mouse and keyboard thus rendering it useless for any type of real gaming. Anyone else have this problem? Is there anyway around it?

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References www.tested.com/forums/pc-and-mac/9279-lag-when-hooking-computer-to-tv-via-hdmi/

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