How can i fix this outline?

Unity Engine
1

Hi guys!
Having multiple sprite atlas
there is no any outline
but in game having some trouble.
How can i fix it?

2

Try setting filter mode to “point” instead of bilinear.
Also make sure to have “pixel perfect” checked in your canvas.

3

it’s not a canvas.
simple sprites
and trying everthing.
Change Filter mode, mesh type, compression.
nothing working.

Unity3d 5.6.4

4

solved by changing project quality settings

5

which setting exactly made the difference?