Re: ptc creo parametric is to slow while using virtual box
Creo Parametric normally uses hardware accelerated OpenGL for graphics. If you run it in a virtual box - I assume a type of advanced Windows emulator - I would be surprised if it didn't switch to the slower WIN32_GDI graphics mode. And then it is not using the modern graphics capabilities at all, but basically 2D graphic routines with everything computed by the CPU.
Open File > Help > System Information and scroll down to Machine Information to check.