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

The DNS server is usually set in the routers configuration pages (assuming your ISP ‘BT’ allow you to change the server) you could try the usual public DNS servers such as Google (8.8.8.8 / 8.8.4.4) or Cloudflare (1.1.1.1 / 1.0.0.1) to name, but four, to try - However it’s unusual, if the networks are many hundreds of miles apart.

I will just add that the speed of my internet connection is more than 10X the download speed to what you’re using, so that maybe a factor here too, perhaps?

Hi thanks once more - the 73 Mb/s is a very solid download speed for most households in UK - must don’t yet have fibre to property - and it,or lower, has for many years been more than adequate for Sonos applications.   The key thing is that the fault is being experienced in four different regions of Uk with different routers whereas previously there was not an issue with the same set up.  The only variables before and after appear to be iOS and Sonos software updates 

Whilst I’m also based in the UK and both an Apple iOS and an S2 Sonos system user, I don’t personally use BT as my ISP. So I can only suggest you perhaps go onto submit a Sonos diagnostic report from each (or some) of your Sonos systems, post search-return(s), and then speak direct with Sonos Support Staff about your matter.

The online link to contact Sonos Staff is HERE.

I’ve not (so far) seen others mention anything about the speed of the App search-results either, at least not in this user-community, but maybe others here will go onto chime in, that’s if they are experiencing similar issues.

The only other matters I can think of, are related to the following summary list, just in case you want to go onto explore those matters yourself too …

• QoS or Airtime Fairness operating on the BT router
• VPN and/or security based software running on the mobile device
• Private WiFi Address (MAC Spoofing) enabled in the iOS Network connection properties
• WiFi calling enabled on the iOS device

Admittedly 20+ seconds does seem rather a long time to return a search-result and I would have expected to see more reports about that sort of issue, particularly as both the iOS 16.2 release was mid-December and the S2 App update was released on December 6th, but maybe others here will go onto respond to this thread.

Personally I’m not seeing a problem at this moment in time, but as mentioned, my download speeds are much higher than the speed you mentioned, albeit my iPhone XR is older than your controller devices. 

Anyhow have a good New Year and I sincerely hope you get to find the answer to your search issue.

As a throw away comment, I do have to wonder if perhaps BT pushed out some sort of update to their routers that might be contributing to this. 

I’m a US user, and not seeing this altered behavior either. 

Thank you…that seems like a possibility since all properties use the same BT Hub - I’ll see if there’s any discussion on BT community 

Unfortunately, based on many years of frequenting this forum, I’ve noticed a rather large amount of issues with BT’s hardware. If I ever move to the UK, I’ll be certain not to choose them as my ISP. 

In fairness to BT, they do have a large market share so not u surprisingly will be the subject of a fair number of issues.  Not sure alternative providers are any better or worse. 

I don’t use an ISP provided router (other than as a modem), as you usually only get what don’t pay for with those ‘free’ devices anyway.😂

...and whilst BT routers are regularly complained about online, often in regards to SSDP multicasting ‘device discovery’ across it’s wired/wireless segments, with some firmware updates. I think we can be safe in the knowledge anyway here, that each Sonos system is running on SonosNet using a Boost as its (likely) root-bridge. Although I guess DNS/QoS issues etc; have not (yet) been ruled out.

I’m thinking it would be interesting to try an Android controller device with each Sonos system, as it might be something on the iOS devices, like ‘Private WiFi Address’ or even the recent Home(Kit) App upgrade, that Apple ’quickly’ withdrew because of it causing problems with various smart-home products, including their own HomePod speakers.

Next step might be to borrow an Android device to see if the Sonos App search provides much faster results. Then perhaps hone-in further on the Apple controller devices.

Can you just put these iffy BT devices in Bridge mode and use real router? This is what I do in the US with my XFinity-supplied modem.

I’ve always done the same, both with an AT&T connection, now with a Spectrum device.