is the latest App update safe to load ?

I'm finding the app hugely laggy currently. I was away on holiday when the last release landed, and it's been this way since I returned. 

If I'm playing a song, and that finishes and a new starts, the app tends to still display the old song for up 20 seconds, and sometimes more. I can't stop playing the music if I want to until the app catches up with itself. Nor can I skip songs in that time. 

I'm on the latest firmware and app versions, using the app on android.

Internet router and all components have been rebooted to no avail. 

Hey, Ken and Stanley,

 found a way out - and maybe the source, blocking the app: my beam. 
 

on the way to change the network, the app is trying to find my devices. It finds first and only the beam. I do, what I am said to do. In the end: no more devices can be added. 
 

now: I took the beam of the current. And - great delight- the app found, updated and added one device after the other. And in the end I  could add the beam without losing anything else. 
 

I have not the slightest idea why it worked out. But I am happy. 
 

The support I contacted before I asked for your help. Before contacting the support, I couldn’t find anything here, but was also not able to post and articulate my question. 
 

A time consuming process/learning experience - but with a more delightful end than during 6/24 ( my Sonos and I moved in this apartment and the dreadful update hit us) through 11/24 (my brother came and successfully installed the system).

Perhaps screen-record what you are seeing when reproducing the issue(s) and immediately submit a Sonos system diagnostic report from within the Sonos App, note it’s reference and contact/chat with Sonos Support Staff via this LINK and see what the Staff can perhaps suggest to help you to resolve the matter.

I might try that but seriously, what a faff. All of it. I'm just exasperated. 

I allowed the update: my findings are:

(iOS)

From the Sonos App:

Performance degradation due to  periodically looses or turns off a speaker.

Some instances of turning on the app- the App says there is no system, requiring turning off & on the app a few times.

Minor app issue:

App graphic no longer updates with the music. Again- turn off the app & return, & the graphic may update to current music- approx 80%. If not, a second refresh usually updates the image.

Air Streaming  - works like it had before the update.

over all, this is pretty much a standard poor release for Sonos.  I’m grateful I can still airstream.

Over all:

I am not sure that I will allow future updates. I fear loss of non app function.