Remind me how chunks work for mesh limit

If I place 512 objects at alt 70, can I place another 512 at mantle within the same 2x2 footprint? That is, is it 2x2x2 or is it 2x2 from mantle to max height (if that makes sense)?

Also, power coils count towards the mesh limit right?

2x2x256. Full high.
Yes they do.

Use the Dev tools to determine the chunk number. If you work it right you can split your 2x2 over 4 chunks and get 512 in each assuming you aren’t putting stuff in the 3 other plots in that chunk.