I have a base BP template I use for all my actors of a similar type (in this case buildings), in some cases not all of the static mesh slots I have created within the template are used and are left empty.
I was wondering if these empty mesh slots and their relative material slots cost anything in terms of draw calls/performance etc?
I have read that an empty material slot will still cost a draw call on a static mesh but wondered if this still happens when there is no static mesh in a slot at all as well?