Ok, thanks, I suspected this would be the case... I actually use an int array with id's in my iterations so 16 per cacheline... I can only compact them from the

Ok, thanks, I suspected this would be the case... I actually use an int array with id's in my iterations so 16 per cacheline... I can only compact them from the start and end of each box (geographical square) on array edge enter/leave because of thread safety. I will size the boxes at what my client can render probably at ~900 per box since C+ skin mesh animation wont allow more and prune with priority (friends first, same country second etc.). But now I know how to implement it thanks to Niklas and your comment.