Black Line Flickering

When i move around there is this black line flickering which i can't work out what's causing it? It also happens when i play and move around also.

Any idea?

Thanks!

 

You could try:
A. Set up pixel perfect camera https://blogs.unity3d.com/2019/03/1...up-your-unity-project-for-retro-8-bits-games/
B. This is easier: have your artwork be slightly larger than your tile size so they bleed over into adjacent tiles. This extra overdraw will mean there's no momentary gaps