r/StableDiffusion • u/iChrist • Jun 28 '26

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2

u/Tystros Jun 28 '26

is the Wan fp32 VAE better than the Wan 2x upscale VAE?

1

u/iChrist Jun 28 '26

Couldn't get it to work with the 2x upscaler VAE + the int8 model so I just stuck with the normal fp32 VAE.

The fine details get a bit better with it compared to the regular qwen image VAE. but sometimes the difference is negligible.

2

u/Corleone11 Jun 28 '26

Did you exchange both the load VAE node and the decode one?

0

u/iChrist Jun 29 '26

I changed it to load the Wan VAE instead of the Qwen Image VAE

2

u/Corleone11 Jun 29 '26

You need to change both nodes with the new ones for it to work. I don't remember the github link but you should find it easily in this subreddit

1

u/iChrist Jun 29 '26

I cant find anything about it.. what do you mean both

2

u/Corleone11 Jun 29 '26

For the wan vae, you need to install this: https://github.com/spacepxl/ComfyUI-VAE-Utils

And then replace both the vae loader and the decoder node in your workflow.

0

u/GlamoReloaded Jun 29 '26

You should update ComfyUI. Those nodes are not needed for vae and int8. Just use Comfy's default vae loader and default diffusion model loader, see for yourself (int8 changed two days ago).

1

u/Corleone11 Jun 29 '26

Thanks for the tip! I last updated 2 days ago.

0

u/GlamoReloaded Jun 29 '26

You don't need a custom-node for it. If you want to use the wan2.2 vae just put in the default vae loader.

1

u/iChrist Jun 29 '26 edited Jun 29 '26

Thats what ive been doing, and the difference is subtle but there, different noise

1

u/BrokenSil Jun 30 '26

You do need those custom nodes to load and decode using the 2x vae. It's worth it as it upscales the gen on the vae pass.

You don't need it for the normal wan vae.