I'm using an older version of RR N, but all the versions are supported by GApps. You don't have to worry about that!!
You can use pico x86 version of GApps as it gets patched easily and reduce the bulkiness of apps.
For screen freeze issues please click the link below:
~Click Here~
For Earphone issues there are no better solutions. So the best thing you can do is unplugging and re-plugging the code multiple times or,
restarting the phone if the above one is not working.
Hope you found it resourceful.... :good::good: