2. Limit the number of non procedural asteroids/floating objects/drones
3. Try the following limitations
Projectors are 1 per grid.
Earthbreaker drills are 1 per grid
Normal drills are 9 per grid
Refineries are 20 per grid
Assemblers are 20 per grid
Nanite factory is 1 per grid
The main lag inducing blocks are nanite factory and drills, earthbreaker drill is large enough you should never need more than one.
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