

AC Valhalla can't initialize dx12 on my Nvidia Titan Black video card, but the video card does support directx12_1. Using the dxcpl.exe to limiting the dx version to 12_1 max and using WARP the game did run, but it lags extremely high. But on the other hand it uses only 1% of the GPU max and all other applications are working perfectly fine.
PC Specs:
CPU: 11th Gen Intel(R) Core(TM) i5-11600K @ 3.90GHz
GPU: NVIDIA GeForce GTX TITAN Black
RAM: 2x8GB (16Gb total)