Hey eklavyaa, I was having some trouble with cracks appearing between tiles when my camera moved (and I'm happy to say I don't anymore!), and it sounds like you're having the same issue - The way I stopped it happening in my project was to change the Tile Properties in the TileMap gameObject's Settings tab to shrink the tile a little. My tiles are 16x16, and when I set it's size as "-8, -8, 0, 15.5, 15.5, 0" I found it no longer happened! You do end up with a slightly smaller game level, but in my case, the size reduction is really insignificant. It was stressing me out big time when nothing I tried worked, so I'd definitely give it a try!