Big issue with my fiber optics internet for Qobuz streaming

@lanx0003 This may or may not help but I am doing exactly what you seem to be about to try.  I have an ATT BGW320 (which you have to use because the ONT is built-in - AT&T doesn't provide a separate ONT).  Since I already had my own Asus mesh system (XT8), I set the BGW320 to passthru and turned off 2.4 and 5 transmitters.  This avoids the problems of double NATing and additional congestion on the networks you actually want to use (Netgear).  I have not modified the MTU setting for either router.  I stream Qobuz without problems.

Honestly, it sounds like a quirk between the AT&T router and your streamer.  If it worked before with the Netgear and that solves your current problem, this is even more likely.  My streamer (Lumin) does not do WiFi and my Mesh layout doesn't place a node near the equipment rack so I have a Netgear range extender providing an ethernet connection to the Lumin which is a little different than your situation.

My AT&T internet has been rock solid but I have only had it since last July.  Where I previously lived, people with AT&T had lots of problems so those issues are probably regional.

I don't know if this is your issue, but I've had instances where the stream from Qobuz is interrupted because of corruption in the files being transmitted.  Sometimes switching to a lower sampling rate helps, sometimes not.

Hey @lanx0003 

try this in this particular order/

1. Power down your streamer  - turn it off and unplug it. This should clear out memory, buffer, etc. do not restart it from software/app as it may not result in clearing out cache or buffer

2. power cycle your DAC - turn it off, unplug it. Wait 30 seconds plug it back in. Let the dac boot up. 

3. plug in your streamer and start it back up

If it doesn’t solve the problem it’s most likely your streamer that went kaput 

I have the same setup a you do re AT&T router, fiber network, etc. I was having issues with being able to access qobuz connect (via bluos controller) and it finally boiled down to needing to whitelist the qobuz website on the router using AT&T Smart Home Manager. Sounds like your problem is a little bit different, but you might want to check those settings to make sure qobuz is on the whitelist. FWIW - both qobuz and Bluesound techs were nearly worthless on this issue. 

@djohnson54  I am doing exactly what you seem to be about to try.  I have an ATT BGW320 (which you have to use because the ONT is built-in - AT&T doesn’t provide a separate ONT).  Since I already had my own Asus mesh system (XT8), I set the BGW320 to passthru and turned off 2.4 and 5 transmitters.  This avoids the problems of double NATing and additional congestion on the networks you actually want to use (Netgear).  I have not modified the MTU setting for either router.  I stream Qobuz without problems.

Yes, this is exactly what I’ve just done. I’ve been playing 24/192 over Wi-Fi for the past almost 3 hours along with 3 other video content streaming for testing purpose, and the issues are gone. @djohnson54 and AI got it completely right. I haven’t changed the DNS or MTU either.

That said, even aside from speed considerations, changing the DNS may still improve security by using one or two of the recommended options from @erik_squires or AI.  Note that the DNS needs to be changed on the new router side, not on the modem per ChatGPT.

Thank you @cleeds, @foggyus91, @tuberist, and @djohnson54 — and also ChatGPT, who provided a 100% accurate and to-the-point solution. I’m really happy to have resolved this annoying issue in such a short time.