I recommend using this setting for the best results.

VAE: Automatic or sdxl_vae

Sampling Method : Euler_ancestral Normal

Sampling steps : 25

CFG: 5 (3.5 is the best)

Upscale : up to you, because this lora without upscale is already good.

ADetailer : up to you, if you want to get the most out of it, you can use this, if not...the picture is still good.