Thanks Michael, that gives a much better idea as to what you are working with. That is some serious shadows.
What I suggest you do is take that same raw image into ACR, and use it's Auto Function, then click on the Denoise, and let it's AI Denoise it. I would also suggest to increase the Texture (under Effects) to try and bring out some more detail.
Then compare the trees in the PureRaw5 to the ACR version of the trees. I found that in my dark images like this, that PureRaw would invent detail that wasn't there, but it thought it should be, while ACR was more conservative on the inventing new detail part.
I think if you do that, you will decide if you want PureRaw5. Of course you have to recall, that this image is on the Worst Case scenerio side. And we have seen PureRaw5 add details that weren't there.
You may want to try PureRaw5 on a more normal image where you just want to improve it slightly.