I am experiencing the same. The TV audio swap is very hit and miss. Sometimes it will work well, other times I will switch and all I’ll get is static and I have to disconnect and reconnect with my arc to have it functioning correctly. Other times it will have mini audio drops outs randomly/intermittent static. It seems very buggy in its current state. Hopefully it is a software problem and not a hardware problem.

Thanks for the confirmation! So this seems to be a general issue. 

I would say I get them less frequently, but they are there. Is it like a millisecond for you? Like just barely noticeable, but still evident?

That is what I’m getting. It happens very quick. 

Are you going to keep or return yours due to this?

What you describe is exactly what is happening to me. I am going to keep them for the time being. Hope for improvement. I like them quite a lot otherwise. 

Same. I’m hoping this is just something software can fix in the next update.

I got the same.  
First night last night with my headphones all was good. 
Then tonight I get the little crackles and dropouts.  Swapping back to TV and back seems to fix it for a while.  
Just testing now, as I think it only seems to happen while using noise reduction.   
 

Nope, still happens when not using noise reduction too.  :(

not at this point, as I am suspecting that it is software related. I havent had any issues with sound drop offs over bluetooth when connected to my phone. If it was a hardware issue it would have to be with the wifi chip inside the headphones. It would be good to have someone from Sonos comment on this and if they are aware of this issue though.

Same issue here - distortion and dropped audio every ~30 seconds in TV Swap mode. I have an Arc with a sub attached and bought these purely for the TV Swap. I tried cranking up Group Audio Delay to high and it seemed slightly better afterwards - maybe it was just placebo.

I have the exact same configuration. I will try the audio delay idea. But won’t affect the lip sync frame delay?

Having the same issue. Returning my original set as I had other issues that customer support wasn’t helpful in resolving, but picked up another set of Aces and unfortunately still experiencing this problem. 

The sound is tinny. Anyone know why?

I’d suggest it’s your unit as this isn’t a commonly reported issue. Presumably you’ve adjusted the EQ?

I've been having the same issue with the ”TV Swap" feature. No pattern. Very hit-and-miss at the moment.

Same thing happening to me.  Lots of cutouts/distortions. Usually lasts for 5-15 seconds, can't discern a pattern as to when. Besides that everything else is fine. 

Same problem here, when using audio swap from Sonos Arc to Sonos Ace every 60 seconds (aprox) I hear a small audio gap. Is like missing data from arc to ace over wifi. It is very annoying cause you are allways waiting to hear that noise again.

Send Sonos diagnostic reports, send one after every drop until you have a half-dozen queued up and then call this in to Sonos Support.

They get sent information on posts here but a Diagnostic and call are the best way to get a fix onto the priority repair-this list.