Framerate Issues of the LIDAR Simulation

[ProfFan]

The framerate drops significantly when the number of LIDAR scans is large. Consider batching the line trace queries or find a way to parallelize them.

Currently all such queries are executed in the main thread. Locking issues may exist as the raytracing locks the Unreal World.

[ProfFan]

Note that PhysX dropped the interface that allows batch collision query. Still finding a method to do this.