>>46510555You can try the Tiled VAE function from the multidiffusion extension out since it'll reduce VRAM usage during Hi-Res Fix. The default settings are fine - I think I also ticked the color fix one.
https://github.com/pkuliyi2015/multidiffusion-upscaler-for-automatic1111/multidiffusion/upscaler itself is still of dubious utility, at least to me, but Tiled VAE does in fact do what it says on the tin.
or just use the img2img tab to upscale
after setting an img2img upscaler in settings! it's set to "None" by default instead of exposing the setting directly like it does in hi-res fixk8 VAE won't hurt but it's going to look very saturated compared to what you're used to
stick to multiples of I want to say 64
might be wrong. but e.g. 1280x640 instead of 1248x640. still, generating that large "base" is something I'd "fix" before swapping VAE out 