Why does SCALER 3 feel different?

I admit that SCALER 3 has more features. But the user experience is completely different from SCALER 2. SCALER 2 opens very quickly for me, without lag. Is this caused by the program’s code? I don’t understand programming, but I can clearly feel that SCALER 2 is smoother. I prefer the feeling SCALER 2 gives me.Scaler 2 has an unresolved issue in Voice grouping, which is inverted chord bass. If Voice grouping is selected, it will change back to the chord’s original root note. This problem hasn’t been fixed yet. However, I found that it has been fixed in Scaler 3. So should I start using Scaler 3?But the user experience of Scaler 3 feels uncomfortable. So now the question is, can the feel of SCALER 3 be made the same as SCALER 2? Why can’t it have the same feel?