My pulse X Infinity stopped working many days ago now I have tried uninstalling and reinstalling various different driver versions as well as trying it on different computers with no success. It produces no sound. I have received absolutely no attention or even acknowledgement of my support ticket #26200.
Alright I found a solution after many hours of playing around with all kinds of things. The solution was to change windows default output to 96 KHz and then restart the pulse at which point it started working again and the default windows sampling frequency can be changed back to 44.1 KHz.
That's an odd one. Nice sleuthing!