Question: can you downgrade directx 12 to 11?
Answer: if you're in a game and you have the option to switch between DX11 and DX12 like in battlefield's recent games, DX 11 is the default choice, and seems more stable, while DX12 will be less stable on cpu's with fewer then 12 th... you dont. Natively run on dx9 like garrysmod.