There a few tags that I find questionable:
What purpose does this tag serve? I can't think of any question that this tag could be applied to. Even the only question that uses it has nothing explicitly to do with vertices.
Is also only used on one question. Looks like it should be made synonymous withentity-system
Seems quite ambiguous. If people have problems with software or a bug in their game that causes crashes would debugging not be more suitable?