Flickering trees and vegetation with multiple displays

Have the same problem. Nvidia 4070, three screen set up. Vegetation just keeps flashing on and off and there is tearing at the edge of the connecting screens. Tried every combination of graphic settings but problem persists. Also, there is no choice in graphic settings to revert to DX11 which someone said could be a solution. In fact there is no choice to choose DX12 or 11. As it is, game in my opinion is unplayable.