Looks similar to fixed bug on 4.1 final:
Takashi Iwai (3):
ALSA: hda - Fix audio crackles on Dell Latitude E7x40
But with final 4.1 release persists on Dell Latitude E7450
Please give alsa-info.sh output on the machine. Run the script with --no-upload option and attach to bugzilla.
Created attachment 181101 [details]
output from alsa-info.sh
OK, I added the fixup for your device (1028:062e) now. It'll be backported to 4.1 stable kernel later. Thanks.