PathFinder status

[LogicParrot]

It all depends on the AI. The vanilla AI mostly does this in a loop:
1. Stay at the same spot for a while
2. Pick a random spot in vicinity and move there
So when there are more entities, it could just make the time interval in step 1 longer.

That's exactly what OUR AI does in its current form, so that optimization works here too. We can make step 1 interval proportional to the number of mobs in the area. Also, we can make idle mobs freeze if they don't see a player for a while.

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...it could just make the time interval in step 1 longer.

Added to the optimizations to-do.