Added SoundPlayerCull to industrial conveyors looping hum sound. It was spawned regardless of distance then paused
Editor profiling, 30 conveyors spawned 150m away:
- 9ms -> 2.3ms total
- ~470us -> ~220us per conveyor spawn
- Sound.DoUpdate per frame: 112us -> 20us (the 30 paused hums were still updated every frame)