Playback issues

I have enjoyed flawless playback for the most part when using Musescore (the latest update, not sure exactly of the numbers). However, I was playing around in the mixer today and enabled the Muse Reverb on most of the instruments I'd been using. The score is very dense, lots of instruments, and lots of notes happening at once. The further I let it play, the more crackling and distortion I started to hear, making it unbearable to listen to. The master slider is at 0, so that shouldn't be affecting it. I have a recent laptop that should be able to handle it -- but it's almost as if the program just becomes too powerful once reverb is on. Any advice or settings I could change to actually be able to use reverb?