These workflow are intended to use SD1.5 models and Lora's to generate images at 8k - 16k quickly. please pay attention to the default values and if you build on top of them, feel free to share your work :)

TwinAction-SuperUpscale
This creates two images by using a feedback loop using the first image using tiled VAE, both go through super upscale 8X using your upscaler.

(also available for SD2.1-768)