Sluggish performance when connected through HDMI

[anon(661246)]

Hi everyone,

I just got this tablet a week ago and wanted to set it up on my 20 inch lcd screen through the HDMI port. when I do that I notice it starts very fluid but very 6 seconds or so the mouse and the environment will stutter them go fluid and repeat?

The display is showing both on my lcd screen and the tablet, could this be the issue of slowing the performance?

 

[anon(661246)]

for example happens around 11second mark

https://www.youtube.com/watch?v=Mtu_BqoLGXY&feature=youtube_gdata_player[/YT]

 

[Green_Laser]

I'm still waiting on my cable to arrive.
Does this also happen without the tablet in the dock?

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