Seen it too, but it appears only temporarily if I move the camera away and then back, the image disappears.

In relation to the Cavalry question, I find no difficulty running over the Scots and no trouble versus the crossbowmen either unless they are charging towards my cavalry themselves ... Cavalry appears ok to me, although I agree about the "weight" appearing to be missing from the charge... Even if an attacking wave of cavalry might be decimated, the defending line should be pressed, even buckled under the pressure wave.

Al Jabberwock