[solved] Background Problem

[solved]

Well, the problem is:
I've already tried to monunt the background with the camera, with the player, set the position as the player, set position as the camera
and no matter which solution i do, i get the same problem with the background, this one:

When the player is stopped the background is okay, when the player start walking the background takes a little to start to follow the player, so the black screen appears. If the player walks to left, the black screen appear on right. If the player walks to right, the black screen appears on left, and when the player stop, the background gets okay. See the picture to understand better:


Thanks in Advance


EDIT
I solved changing my game to use interpolate tick instead of process tick during the whole game, also it solved sobre problems while redering