Regarding the speakerphone issue.
This seems to be the commit that's causing the issue:
Just so you know......
Can you make double tap to wake work while rooted with Magisk Su?
Sent from my Nexus 6 using Tapatalk
You have flashed some other mod...
Magisk has SELinux issues and messes up FKU for dt2w and CPU boost... For instance
It shows up on...
Does this release include the new blobs from official 7.1.1?