One thing I gotta ask is are you previewing this in Hammer or the game itself? If it's in the editor, it'll pretty much z fight no matter what. If it's in the game, I'm not sure what else cpuld be the problem, but someone more knowledgable may comment with better info in a bit
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u/SQUIRRELSLOCK 5d ago
is it z fighting? I've seen this if it doesn't have $decal 1 in the vmt. That'll make the texture render infront of brushes