I went over this in DxO PureRAW using DeepPRIME setting then LR and PS where I applied Topaz Sharpen AI and a vignette. Very pleased with this workflow.
Nikon 1 v2 w/18.5 lens, 1/30 sec, f/10, ISO 1600. Very dirty before DeepPRIME or with Detail settings in LR.
PS It also seems difficult to get the WB just right. Shot in late afternoon, the sky seems a bit too blue. Checking WB on various gray stone blocks converges around 4900. Is the mixture of different light sources contributing to the ambiguity? Any strategies for dealing with it besides gray card?