To determine if Raw Details improves the image, apply it, and then compare before and after at 100% view.
If it improves the image, keep it, if not, don't use it.
Viewing at 100% is extremely important for assessing any image detail. This is the only magnification that gives you a true impression of the image – one image pixel is represented by one screen pixel. Any other view (like Fit) will be inaccurate and misleading because the image has been scaled.
If you have a high resolution monitor (generally 4k or more, but less than that if you have a laptop), you might want to use 200% view because the pixels are tiny, and details that you cannot see at 100% may be revealed at 200%.
I have tried Raw Details from time to time over the years, but I have only seen a marginal improvement in a few cases.
Most of the time, there is no visible change in the image, so I never use it.
It might be useful in combination with Super resolution, which I don't use either.
To determine if you should use it with Denoise, create a virtual copy, do Denoise on the original and Denoise + Raw Details on the virtual copy. Then compare the results at 100% view.
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