@RudiK I also use my Sonos speakers in wifi mode (WM:1) and since the update to 2.0.2, everything has been working great, although I don't believe I have tried to pair speakers lately, I am planning to swap out my pair on Ones for Play:5's this weekend and I will let you know how it goes.
Off the top of my head, make sure you are using an Employee Network type and have "Shared Services" disabled.