Unsolved Qt for Python vs PyQt5 performance

[Dagginio]

Hey,

I want to rewrite my application from PyQt5 to Qt for Python. Most of it runs rather smooth. However, I have the feeling, that PyQt5 has a much better performance. The same app, I just change the imports from PyQt5 to PySide2 and everything runs rather sluggish. Did some one else make similar observations?

Thanks for your help
Daniel