I have this large union which basically halves a part with a cylinder. Unioning it makes it look normal, but when I turn on Show Decomposition Geometry, it shows this weird collision on the union that doesn’t look like the negated part
I’ve also tried turning on PreciseConvexDecomposition, but it makes the collisions even worse
I’m not an expert in this particular field, but my hacky programmer brain tells me to make the union CanCollide = false, then add invisible parts that will act as the floor.
Though this is just if you need a quick hacky fix haha