When I open my door, it slides horizontally, going into a wall. When the wall and door come together the textures flicker as it is glitchy. What do I do to keep the wall and yet get the door to move into it without glitching. Thanks.
You need to make the door either smaller or bigger than the wall. The glitchness is coming from both textures trying to beat the other out for visibility, thus seeing both of them at once.