Does anyone get the mouse lag with an external display connected via the display port?

does anyone get the mouse lag with an external display connected via the display port?

You don't describe the problem in great detail.  Is this the issue you are describing?
https://discussions.apple.com/thread/4398076?start=0&tstart=0
If so, then, "Yes."  I have the same problem.  Note that this isn't a tracking speed problem for me, it's a lag between my hand moving and the pointer moving on the external display.
Andrew

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