That looks to be our old nemesis, judder. Judder has been the bane of cinematographers since the dawn of the motion picture. There is nothing much you can do about that. It has to do with the speed things are moving. Horizontal motion is a beast. Watch the opening shot to Cowboys and Aliens, there is a surprising amount of judder in it for a major motion picture (at least there was in the cinema when I watched it).
Different DP’s have different methods to get the shot a director wants without having there be judder. Certain pan speeds will get by without judder, other speeds will judder.
You can try adding some horizontal blur to see if it helps.
Is there any way in the edit you could get by without actually speeding up the footage? Cross fade between shots? Come into the shot at a different point? Leave the shot at a different point?
This page [link] has some more information on dealing with judder in motion graphics that may help you.
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