Difference between Sprite and Tiled Background?

Hi there!

I use 2 "Tiled Background" as my background for a layout and they are both 1920x1080 big. When I use "Tiled Background" you can see a line where they "meet". I mean where the first "Tiled Background" ends and the other starts. You can only see it when the player is moving though and when the player stops the line disappears.

I was thinking about using 2 sprites instead and it seems to work great but in the back of my head there's a voice saying "2 huge sprites will mess up your game". Is it true though? If I disable collisions and set the speed to 0, what is the difference?

Thanks in advance,

Tommy / tomologames.com