Topaz Upscale Settings

Topaz Upscale Settings doesn't do anything by itself, and that's the point. It's a settings container in the same family as the config nodes in other packs: you build it, tune a few knobs, and plug it into the Topaz Photo AI node's upscale input so you're not stuck with Topaz's auto-pilot guesses. If you've ever wanted to tell a paid upscaler "no, use High Fidelity at 2x, ease off the denoise," this is the knob you turn.

The wider pack works by launching your licensed Topaz Photo AI install - tpai.exe - as a subprocess and passing it CLI flags. This node is just the part that fills in the --upscale flags. Each input here maps one-to-one onto a flag, which matters because it explains the slightly odd naming. The author has named the knobs denoise, deblur, and detail, but under the hood they're Topaz's generic param1, param2, and param3 (Minor Denoise, Minor Deblur, and Fix Compression). The README's own TODO admits the mapping is a work-in-progress; don't overthink it, they behave exactly like the labels say.

The inputs that actually matter:

• model - five choices, defaulting to Standard V2. High Fidelity / High Fidelity V2 are the quality picks; Low Resolution is aimed at small, already-soft sources where the model that adds the least guesswork wins.
• scale - 0–10, default 2. How much bigger. 2x is the sane default; going past 4x starts asking Topaz to invent things.
• denoise / deblur / detail - each 0–10, all defaulting to 0.2. These are the "minor" adjustment params Topaz applies alongside the upscale, not heavy restoration passes.

There's also an enabled toggle (true/false). Flipping it to false turns the whole upscale pass off - same as not wiring anything in, but handy when you're toggling a comparison.

Wiring: the single output, upscale_settings (type TopazUpscaleSettings), goes into the upscale input on the Topaz Photo AI node. A good starting point, straight from the author's own README: run Topaz Photo AI once with no settings wired, read the autopilot_settings output to see what it chose, then copy those denoise/deblur/detail values into this node and change the model to something you actually picked. That's the whole workflow - auto-pilot to discover, manual to refine.

Install is the shared pack story: ComfyUI Manager → search Comfy-Topaz, or clone and restart:

cd ComfyUI/custom_nodes
git clone https://github.com/choey/Comfy-Topaz

Then restart ComfyUI. You also need a licensed Topaz Photo AI install on the same machine and the path to tpai.exe set in ComfyUI's settings under Topaz Photo AI (tpai.exe) - this node does nothing without that. It's Windows-only, because tpai.exe is a Windows binary.

Most "it's not working" reports trace back to that path, not to this node. Get the executable found and the rest is just three floats and a model dropdown.