lag and stop playing sound on music and TV

We have 3 amps, a beam, and One SL. We play music across our house and outside. I have spent many hours on the phone with Somos customer service and still have same issue. Whether we are playing music or TV the speakers will stop playing sound. Relaxing or parties in the pool it becomes very frustrating. I am on a mesh network using Ubiquity access points. The last conversation I had with customer service they told me Sonos does not work with repeaters and refused to acknowledge I have access points. I have tried changing Sonos channel I am on.  My options are 1, 6, and 11. I have tried grouping and ungrouping them. Nothing seems to work. We have removed and added back. Rebooted system. Pretty much everything but return it all. Has anyone else had this same issue and if so how did you fix it?