No chance with VirtualBox to get desired performance. There will be provided an updated ISO which fixes soundcard rights in /etc/group.
Probably there will be a downgrade of ags-0.4.2-20 to ags-0.4.2-19 because it seems to be broken.
The live DVD works great with my 2 years old Lenovo Yoga Ultrabook :)
Keyboard doesn't work with apple so me rebuilding kernel to include applesmc
Figured out dhclient isn't working correctly.
I'm rebuilding the entire system this time without sysvinit but systemd. Supporting apple notebooks is planned, too. Thus are more drivers needed as previously mentioned.
To be continued...