Problems with playback in musescore 4

I am having some problems when I am editing scores at musescore 4 because when i am trying to hear the playback, it does not sound fluently but intermittently. This phenomenon only happens when I am editing a socre, because when it is uploaded to the website or when I export it, it sounds like it should.
(P.S: I asked this before but I think that my message was not uploaded well. If someone had red it and replied, I can not see it, sorry.)
Thanks a lot.