Integration of NVidia PhysX 4.1 to my homemade game engine Offroad2. I use one new thread for physics simulation (fixed step) and second one for asynchronous physics scene preparation (cooking). Engine details: Homemade project developed in free time after work. Written in C++ (OpenGL, SDL2, Imgui). Multiplatform (Windows, Linux). Map size: 41x41 km. Download: https://yodacz.itch.io/offroad2