New setting test. (for time reduction)

Using : Negative Guidance minimum sigma (skip negative prompt for some steps when the image is almost ready; 0=disable, higher=faster) 

Settings

DPM++ 2M Karras

512*640 resolution

hires 1.5 

batch count : 4

Adetailer on (face, hand)

Sampling steps: 15 

Lora included

Check Point model : majicmixRealistic_v6

After every test group, reboot laptop

Negative Guidance minimum sigma : 0 (default)

test result (time) 

1. 3min 1.6sec

2. 3min 3.3sec

3. 3min 3.2sec

4. 3min 4.3sec

5. 2min 58.4sec

6. 2min 56sec

7. 2min 51.5sec

8. 3min 11.6sec

9. 3min 0.8sec

10. 2min 53.4sec

11. 3min 3.4sec

12. 2min 46sec

13. 3min

14. 3min 5.5sec

15. 3min 3.8sec

16. 2min 59.3sec

17. 3min 0.4sec

18. 3min 10.7sec

19. 2min 46.4sec

20. 3min 1.3sec

Avg(Average): (except longest and shortest time, simple average): 3min 0.2sec

(Round to the nearest second decimal place)

Negative Guidance minimum sigma : 0.1

1. 3min 1.1sec

2. 2min 52.2sec

3. 2min 52.3sec

4. 2min 52.4sec

5. 2min 57.8sec

6. 2min 51.5sec

7. 3min 1.4sec

8. 2min 52.9sec

9. 2min 50.6sec

10. 2min 57sec

11. 2min 43.3sec

12. 2min 48.1sec

13. 2min 47.7sec

14. 2min 54.2sec

15. 2min 48.7sec

16. 2min 52.6sec

17. 2min 57.5sec

18. 2min 49.1sec

19. 2min 56.6sec

20. 2min 46.8sec

Avg: 2min 52.7sec

Negative Guidance minimum sigma : 0.5

1. 2min 44.3sec

2. 2min 35.7sec

3. 2min 42.2sec

4. 2min 43sec

5. 2min 38.9sec

6. 2min 38.9sec

7. 2min 45.8sec

8. 2min 46.7sec

9. 2min 55.9sec

10. 2min 39.9sec

11. 2min 47.9sec

12. 2min 43.3sec

13. 2min 44.9sec

14. 2min 41.7sec

15. 2min 38.4sec

16. 2min 38.4sec

17. 2min 51.3sec

18. 2min 48sec

19. 2min 46sec

20. 2min 32.3sec

Avg : 2min 43.1sec

Conclusion : Significant reduction in time

                 More value, more time reduction(same as the description)

Here are some quality comparison

(check point model changed : meichidark v3.8 , plMix3rd)

In my settings, more vallue, slightly more lose or just changing tiny parts detail.

Negative Guidance minimum sigma : 3 and 5 has same result.

Negative Guidance minimum sigma : over 3 affected image pose.

Negative Guidance minimum sigma : over 3 affected image style.

Negative Guidance minimum sigma value 1 looks good starting value. (Temporary)