Why instant coordinate teleportation causes players to fall through the map:

When you instantly write new coordinates to CVehicle or CPed, the streaming engine has not loaded the destination terrain collision mesh.

Safe Teleport Sequence:

1. Freeze entity position (ENTITY::FREEZE_ENTITY_POSITION(ped, true)).
2. Request collision tiles (STREAMING::REQUEST_COLLISION_AT_COORD(x, y, z)).
3. Pre-load map scene (STREAMING::LOAD_SCENE(x, y, z)).
4. Wait 100ms for terrain collision to stream in.
5. Write target coordinates and unfreeze ped!

Zero falling through the map or getting stuck in low-poly LOD terrain!

STREAMING::LOAD_SCENE is mandatory when teleporting across the map (e.g. Los Santos to Paleto Bay). Eliminates void falls.

Very reliable teleportation routine.