Strange bobbing formation when walking up hill in a siege attack

[niekdegrijze]

wasn't sure where to post this as it is not a technical issue,
But while the troop movement generally looks very good, I noticed a very strange bobbing in an attacking formation while it slowly walked uphill towards the wall.
The units are protecting themselves with shields and the angle of the incline gives them an almost crouching walk.
Each line in de formation was bobbing up in order. This was a very unnatural view.

I hope I explained it properly

 

[KingEroc1st]

sieges are wonky due to small spaces and lots of units if you enable it. sometimes the entire enemy defending formations inside the walls are all twitching at once