I recommend a strength of 0.6-0.8, a higher strength makes the textures and forms a bit blurry and deformations can happen, but feel free to experiment!
The best results are achieved using the following checkpoint:
Checkpoint:
https://tensor.art/models/874578634139015848/
Recommended settings:
Euler a
Steps: 20-30
CFG: 2
ADetailer face_yolov8s.pt