Phoronix published a review on the Linux 4.11 Doesn't Change The Game For AMD's Ryzen
A quote from the article:
Linux 4.11 is worthwhile in that it's bringing ALC1220 audio support, the codec used by many Ryzen (and Intel Kabylake) motherboards, but this next kernel version doesn't appear to change Ryzen's performance...Linux 4.11 Doesn't Change The Game For AMD's Ryzen @ Phoronix