For best outputs:

Sampler: DPM++ 2M Karras

Steps: 50, cfg 7, CLIP skip 1.

VAE: none.

Pos prompt: quality keywords like "amazing quality, masterpiece, best quality, absurdres, beautiful, detailed shadow, aesthetic, highly detailed, vibrant, cinematic, absurdres" may improve the overall quality some. Also using the LoRa "EnvyAwesomizeXL01" can create some of extra quality (included in some of my example runs).

Neg prompt: nothing or simply "worst quality, low quality".