Thanks. I'll take a look. Now when you say all sliders to zero in the Noise Reduction section Color is at 25 and Detail at 50 by default. Do these have to be brought down to zero too?
yah, otherwise you'll be doing NR twice- once in LR and again in Topaz. You want to run NR through only one engine and let Denoise determine what is noise and what is detail.
hope it helps