use hideentity to make sure blitz treats them as 'inactive'. So only when you need the 10 to 30 ships you should unhide those entities that are required. \
Remember if you know a certain part of space has 20 ships always in that area, then attach those ships to a parent entity so you can hide that parent entity (it will hide all children) .. Much quicker than looping through a large amount of entities.
Remember if you know a certain part of space has 20 ships always in that area, then attach those ships to a parent entity so you can hide that parent entity (it will hide all children) .. Much quicker than looping through a large amount of entities.