Anyone else experiencing severe APP LAG & slow loading/refresh with S2?

Thanks for the reply but, as others have said, it doesn’t seem likely to be an interference issue. I’ve done the interference checks others had noted and the same speakers worked perfectly well on S1 without an lag issues. 

Device discovery is entirely the same whether it is S1 or S2. Your router is by far the most probable cause, please tell us what kind it is (and whether you are using WiFi [likely] or SonosNet [less likely].

Device discovery is:

SSDP broadcast (3 seconds per UPnP spec)

SSDP multicast (3 seconds concurrent with broadcast)

mDNS search (concurrent)

When a device is found (on the correct Household) then it is scanned for services, and the interesting services are subscribed to. Some UPnP calls are also made to each device.

That is all local network device-to-device calls, and as we have seen too many times, some routers suck at this.

None of this has changed between S1 and S2.

If using a PC or a Mac then there are some human-readable logs generated which might give a clue. On all devices you can always generate a Diagnostic for Sonos support to take a look at.

I also had this Problem, changed my Network Setting on the Router.

2,4 GHz-Network channel from 1 to 6 and my Problem is solved. 

I would like to add my concerns. It seems to have gone worse recently- Nov 2022. It seems to struggle to produce my recent playing history. In S1, i deleted this function, but cannot with S2.

As I am not suffering short-term memory loss so this is a completely useless function, in any event. I would much rather be reminded that Ii have not played Album X in the last 2-years, or similar. Sonos is collecting data for no useful reason.

Are you not able to switch this off in the Sonos App ‘Settings/Data & Privacy’ by switching off ‘Use Personalization Services’ and hiding the recently played list in the ‘My Sonos’ tab?

Hi

I’m having similar issues - I’ve four systems in four locations using separate WiFi networks.  Three use S2 and one S1. Very recently, ALL apps (irrespective of S1/S2) are slow to respond to volume changes and to load search results - Amazon Music/ Hype Machine results returned seemingly instantly but Quobuz and Spotify(My go to choice) take twenty seconds or more to return results.  Using iPhone 13 iOS 16 generally but elsewhere iPads 6s or 9s using latest software.  Sonos software up to date.   Each system uses Boost for network and has 73 Mb/s BT internet.  Disconnected and reloaded S1/S2 Apps but issue remains.  Search results used to be returned almost instantly.   iMac controller still functions as it should with no delay.

Likely going to be WiFi interference from the Wireless networks and SonosNet channels in use. Can you perhaps outline the SSID’s/Wifi channels/Channel-widths in use by each network and state the SonosNet channels too. Maybe then some suggestions can be made to reduce the interference.

It would also help to describe how far away each Boost/Wired Sonos device, is from its nearest wireless AP.

Hi - thank you.  However it’s unlikely to be wifi interference since the same situation has only recently arisen in four different distinct properties, each of which has behaved impeccably before.  Moreover, the issue is the same no matter what the distance from the controller device (app) and the boost.   No other WiFi issues eg interference which has necessitated change of Sonos channel.   The fact that I’m experiencing the same issue, using various app carrying devices, in four separate geographical locations with different WiFi networks suggests to me some glitch between the Sonos app and iOS software version.   IMac controller nit experiencing the same issue even though furthest away from the Boost.  Even within a couple of feet the iOS devices still  experience issues  

Thank you - not sure how I change the DNS server - all properties use BT routers on BT contracts as internet provider but are geographically hundreds of miles away from each other. 
 

it is effectively as if four separate households were experiencing the same issue, the only common connection being all Sonos players are identified as belonging to my account (but set up as four separate households systems) and the same issue arises whether S1 (one household) or S2 (three households) are being used, by the same (this iPhone 13 or my wife’s iphone13 which move between properties) or the iPads which remain as controllers in the specific properties.  The only controller which works as normal is the iMac (on an S1 system).