This merge takes the best of all the models used makes a extremely versatile model.
Settings:
Sampler: I suggest Euler a with 30 steps or DPM++ 3M SDE Karras 25 steps
Resolution: I use 1360×1360, 904x1360, 1536x1024. As long as you use common aspect ratios like 1:1 or 2:3/3:2. You'll be fine.
CFG: 3 to 10, preferably. I prefer using 5 or below.
Hires fix settings: I don't usually use it so I can't say for certain but 10 steps should be fine.