The map I'm working on has 2 moving surfaces where stickys always bump instead of staying still. A thread in this forum explains that it's possible to put a trigger_vphysics_motion to make them "stop" (reduce the movement speed to zero) when they reach the surface ([ame="http://forums.tf2maps.net/showthread.php?t=8190"]http://forums.tf2maps.net/showthread.php?t=8190[/ame]). But I also can put two custom dynamic props with the same collision model than the moving brush (a flat cube) and parent them to it. If I do this, I need to use 5-6 times the prop to cover the whole brush. My question is, what can be better for the performance of the map? Is there another option? I don't know how to model (I was going to make a request for it), so I prefer to know what's better before requesting.