This model is a merge of the Unreal Dream model with realistic models that generate Asian people. To generate people of other ethnicities put asian, japanese, korean, chinese in the negative prompt.
Recomendations:
Use the lite version, the results are almost the same and it takes up 50% of the size.
Use the DPM++ SDE Karras sampler with only 20 steps for better quality.
Use the CFG scale between 5 and 9. CFG scale at 7 is recommended.
Resolution between 512 and 768 using "Hires. Fix" or other form of upscaling.