Troubles whith the MIDI reproduction when editing in musescore 4

When editing scores in musescore 4 I have some troubles with the reproduction of the MIDI when I end up entering notes. The sound is not completely fluent, sometimes the part of some instrument does not reproduce and in general, the music gets continually interrupted. This only happens when I am editing, because when I upload it on the website it sounds as fluent as I want it to be.
I don't know if the amount of instruments in a score matters, because with an orchestral score, this phenomenon happens more frequently but when it is a score for only one instrument or two, it is more strange to happen.
Is there any solution to that?
Thanks a lot