Yep, rendering 17178 objects at once takes quite some computer performance, however if you have a weak PC you can drastically improve your frame rate by lowering your resolution.

This is cool, and you actually got FishFlock working! (it never works for me lmao). My only issue with this is that it lags! I'm not sure what exactly could be causing it, maybe too many objects in one area? I dont know. It's a shame this lags.