Inconsistent camera drawing for nearby objects

[Poblo0]

Describe the bug
When instancing tiles that are 1.0 x 1.0 in dimension and putting them appart exactly 1.0 in a certain direction sometimes weird lines appear as if some tiles weren't exactly fitting and when moving the camera the ones that have lines vary.

I'm using an orthographic camera and all tiles have the same value in the z axis.

Also this problem only happen in the y axis.

Screenshots

Desktop:

• OS: Windows10

Additional context
The assets I'm using aren't mine and are from Dingaling's awesome game Lisa The Painful.