Hissing popping cracking noises when rebooting RPi

Hi
I have OSMC 17.1 setup on my RPi2.
Before the upgrade to 17.1 I had the issue of Hissing popping cracking noises when rebooting RPi solved as I directed the audio output to an external USB soundcard by installing ALSA. This worked fine until I upgraded to 17/17.1.

Now, those noises came back and it is very annoying.
I reinstalled ALSA but no luck.

Has anyone else experienced that?

Check your psu and surrounding psus.
Try if it also happens with headphones.