On Sunday when I started Lightroom, it announced very proudly that it now incorporated an AI De-noise option so I thought I would give it a try.
This image used Lightroom AI Denoise option at the default "50%"
LRAI.jpg
This was from Topaz Denoise using the LowLight option (with default settings):
TPAI.jpg
One thing I noticed was that the LR de-noise option took a LOT longer than using Topaz (10 minutes for LR, and about 2 minutes for Topaz)
here is the original raw:
orig.jpg