Need help: Sprite2D is flickering on vertical movement

Hi!

Please help.

Situation:

As you can see in this video sprite of horizontally moving enemies is flickering: https://dl.dropboxusercontent.com/u/19764309/Caelum 2014-07-20 16-09-40-92.avi

Flickering is not that visible on video - but, for example, bottom line of green center part is jumping up and down and so on.

Here is screenshots of prefab and sprite setup:





What I tried (no help):

1. Turn off dynamic batching
2. Add animation of 2 same sprites
3. Set pixel to units to 50, 100 and scale down prefab accordingly
4. Resize sprite to 84 by 84 (which is roufly 248 / 3 when pixel to units is 300) in photoshop/paint.net. It stops flickering but sprite quality is awful - edges are blurry, a lot of lines are gone and so on.
5. Turn off sprite built-in compression.
6. Use different shaders.

So far - nothing.

Any advice is really welcome.

Thanks, Artem.