In Twinmotion 2023, when we upgraded the engine for Twinmotion to use Unreal Engine 5, this also included Path Tracer improvements that increased the minimum requirements for Path Tracer. This now requires a graphics card that has built-in hardware accelerated raytracing support. The Quadro P4200 runs on the older Pascal GPU architecture that uses software emulated raytracing, so it cannot use Path Tracer in Twinmotion 2023, and only in Twinmotion 2022.
For Twinmotion 2023, you need to have any NVIDIA RTX graphics card or an AMD Radeon RX 6000 series or newer for Path Tracer.