Using a Win11 PC with multiple graphics cards (in my case, a Lenovo laptop with Integrated Graphics + an Nvidia RTX GPU for gaming).
Launching a game (such as Battlefield 2042) switches to the NVIDIA GPU. However, WARP prevents it.
NVIDIA’s recommendation is “Some programs do not support changing the graphics mode while the application is running. If such a program is running a 3D process, you will not be able to change SLI settings unless you first close the “blocking” program.”
Indeed, Exiting WARP, the game runs normally.