I made it work with more turrets. So you decide if it's a bug.

Hm, no, something is wrong. Wherever I place a turret, they always accumulate just out of range.

Actually, after giving this some thought, the wayfinding might not be a bug. The enemy units are attracted to the spidertron, walk towards it and get caught in the coastline. What else are they supposed to do, there's no better way to reach their target. So it's only the performance thing, but maybe...

This is mainly a problem with the wayfinding of biters/spitters, but it only bothers me because it causes a performance issue. I have placed a spidertron on a small island in a lake. Somehow this causes the enemy units that come around the lake to just stop there and not move anymore. (My guess is t...