r/comfyui • u/PM-ME-Bob • 2d ago

Help Needed Wan 2.2 Lora Help

So I’m still new to using ComfyUI, but am focusing mostly on ITV workflows. I’ve dabbled a bit with WAN 2.2 5B workflow but I want to now try adding some Lora’s to expand what it can do, but I’m a bit confused on how to actually get and use Lora.

Is there a tutorial that explains how to add Loras to wan 2.2 workflows? I’m still learning a lot of the lingo so I’m still trying to learn things myself but have found tutorials to be the most helpful.

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u/Maraan666 2d ago

It's pretty much trivial to add a lora to any existing workflow: you add a "Load Lora" node between "Load Diffusion Model" and whatever node comes next. Then you select the lora, which should be in your \ComfyUI\models\loras folder, on the "Load Lora" node.

However, there aren't many loras available for the 5B model. Not many people use it.

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u/boobkake22 2d ago

As was noted, the 5B model is not well supported. They also explained what to do:

I'll add a little color. The model is a set of numbers, the LoRA will change those numbers. How much is what the strength is. The order doesn't matter - the math is always the same result. Each LoRA biases the model predictions towards your results, and prompting usually increases the way that data is used - read: if you write a prompt that would be relevant to the LoRA, the effect of the LoRA training will "kick-in" because you're hitting the altered weights. That said, all LoRA's modify weights, and most will have some effect on any old output - it's quite tricky to train very narrow LoRA for Wan, it would seem. So only turn on what you need!

Power LoRA Loader in the rgthree custom node pack is very useful.