If you are trying to "force" a game to run using dxcpl.exe by editing the Feature Level to 12:
An Analysis of the DXCPL DirectX 12 Emulator: Functionality, Architecture, and Utility in Graphics Debugging dxcpl directx 12 emulator work
: Because "Force WARP" shifts the heavy lifting of graphics rendering from your GPU to your CPU , performance drops to unplayable levels (often 1–2 frames per second). If you are trying to "force" a game to run using dxcpl
"Feature on Demand". While it can't magically upgrade your physical graphics card, it can change how Windows interacts with specific game executables. How "Emulation" Works in DXCPL dxcpl directx 12 emulator work
Why the confusion?