[SV_BubbleTime]

That confused me at first too.You aren’t diffusing the 8k image.

You are upsampling, then inpainting sections that need it. So if you took your 8K and inpainted a section with 1024x1024 that works well with normal ram usages. In Auto1111, you need to select “inpainted masked area” to do that.

[pjgalbraith]

Yeah exactly this. It doesn't need more VRAM since you inpaint small sections (~512x515) of the image manually. It takes more time but gives the best results.

The automated equivalent is SD Upscale or TiledVAE