First Pass (Base Generation):

• CFG Scale: 5.

• Sampler/Scheduler: I use res_3m and beta57, but standard euler with normal or beta should also work fine if you prefer simplicity.

Upscaling (I use Latent Iterative):

• CFG Scale: 4.

• Sampler/Scheduler: dpmpp_2m with beta worked well for me. I haven't tested other combinations.