I have never been able to get either of my two pairs of LSXs to stream reliably using KEF streaming protocol in Roon. I always had to revert to Airplay for consistent connection but this sacrifices SQ a bit.
Now KEF has released firmware 5.1 which includes a WiFi firmware update and allows for reliable lossless streaming from Roon using the KEF streaming protocol. Update worked flawlessly using the Control app and now Roon and the LSXs are happy together finally. Very pleased with this update from KEF.