Muse Sounds Strings

I just downloaded the beta of MS4 and the new Muse Sounds. I put the new sounds to a string quartet that I transcribed. A lot of the time it just sounds like they're glissing around. This is with the Violin (Solo), Viola (Solo) and Violoncello (Solo) parts. Is there a way to fix that so they don't sound like they're doing glisses everywhere? This happens with large leaps that aren't slurred and even with neighbor notes.