For me is nothing darker with SU10 and in case you get issues with DX12 (BETA) , then just switch back to the current stable DX11. In case it also happens you can take a screenshot, that we get a better idea.
About DLSS and blurriness, you had already a discussion:
But there are also enough other existing topics around that, so we not need to copy the same infos again. ( hint: dont use DLSS for now in case its an issue for you, or play with the Fidelity setting. In case you play with FullHD only, forget DLSS )