I'm experiencing very crackly audio (hard to hear what is happening) when using headphones and only when the controller is on WiFi (sound from the Chromecast is fine and sound from the 3.5mm jack on the headphones is fine when the controller is connected to my phone by USB C).
I have tried on two different internet connections, one of them with ridiculously good WiFi that nobody else was using and insanely low latency (with plenty of bandwidth) and another less good, and with two sets of headphones.
I have reported it via feedback, but not got any sort of reply or acknowledgement.
So, you had crackling issues with the original stadia controller audio jack and the original stadia chromecast ultra - but with another chromecast ultra you bought by yourself, the audio problem with headphones connected to your stadia controller was gone?
That is correct. I started playing more with the new chromecast I bought separately. At the moment, I don't have any sound quality issue when playing with any of them.
I didn't really do anything special, so either it was a server side fix or network related.
Thanks for your input. Okay so this is really strange. I still have the problem (=only while trying to use headphones connected to the controller. The "normal" sound on tv, pc and mac via loudspeakers works well.). 😕
Thank you anyway. Maybe I can try to find another Chromecast Ultra for testing ...