Dif-tor heh smusma!
The optimal weight is about 0.3-0.5. I also recommend using AfterDetailer for better results. Here are the appropriate parameters if you don't know what and how to configure: Inpaint denoising strength - 0.4-0.5 / Mask erosion - 60 / Mask blur - 6). You can leave the rest unchanged. This model has been trained on 512x512 images, but nothing prevents you from using a different resolution)