Interestingly having just launched in Dx11 with the exact same settings at the exact same spot ive lost 15fps, if i turn VXAO on then i lose yet another 15 and get knocked down to 30fps where on Dx12 with HBAO+ i was sitting at 60fps.
VRam usage is exactly the same however within a margin of error.
Something is therefore very wrong with my configuration then.
wonder what it is I've got going on that is causing my issue with DX12? Thank you for testing your system, confirms I've got something wrong.