>>58530918As the other anon said, it's not much longer in terms of generation time, though you pretty much can control how long gen time takes by changing tile size/overlap. It's more time in the sense that it works best in the img2img tab. So with hires fix, I can upscale a batch of however many gens I want at a time. But with tiled diffusion, I have to send a single image to the img2img. But that also means you can reroll the upscale with different seeds.
>>58531465Picrel is a quick comparison. Left is hires fix, right is tiled diffusion. You are right in that it isn't wildly better, but I personally think it does come out cleaner. I also like to combine Tiled Diffusion with ControlNet Tile and bump up the denoise for more detail.
Here is the catbox for the tiled diffusion one.
https://files.catbox.moe/mvg88g.pngAnd the hires fix one
https://files.catbox.moe/zn409d.png