Yes, they sometimes get stuck on terrain (or on the edge of a paving slab set to be walked on). However, this is different; it seems to be as if they get so close to the player they no longer see him...? I reduced the camera distance (to 10) for performance - could that be the culprit (doubtful)?
It seems to be all zombies and I have not been able to isolate any specific situation.
This is a worry because I saw a GG-game on Steam criticised for exactly this issue.
I think it is: if player dist range = a to b then attack, but 'b' just is not always reached. Is that possible?
Julian - increasingly disillusioned and jaded