There was some culling command introduced in v.1.99 IIRC - not sure if this is any use.
Personally, I would detach your children from the master pivot and position them globally.
if you need to offset them from the master pivot taking into consideration he master pivots rotation use tformpoint. Assuming the player is positioned 10 units above and 10 units behind the Master Pivot in local space ...
tformpoint 0,10,-10, MasterPivot, 0
positionentity player, tformedx(), tformedy(), tformedz()
Stevie
Personally, I would detach your children from the master pivot and position them globally.
if you need to offset them from the master pivot taking into consideration he master pivots rotation use tformpoint. Assuming the player is positioned 10 units above and 10 units behind the Master Pivot in local space ...
tformpoint 0,10,-10, MasterPivot, 0
positionentity player, tformedx(), tformedy(), tformedz()
Stevie