I have had a problem with Samplitude Pro X 5 for several days:
1. The instruments only work properly when I am playing with the mouse.
2. USB control keyboard - you cannot hear the game in the middle register.
3. Playing is heard in the low and high registers, but sounds stutter.
I am enclosing a video.
https://drive.google.com/file/d/1O-cuPTPwxdwW8G6w5rfsDcrO2L7MSbfL/view?usp=sharing
What could be the reason? How to fix it?