I reacently bought Sonos Arc, 2x One SL, 2 Ikea Symfonisk bookshelf and a Gen 3 sub.
The system is awesome and i love it.
But every time i come home from work, and start playing music on the kitchen (2x Symfonisk (placed on the kitchen) and the sub (placed in the livingroom)), only 1 Symfonisk speaker starts playing. After 30-60 sec the sub starts, and after additional 30-60 sec the last Symfonisk starts.
Is this normal ? Or is there something i can do to make the whole system start at once?