Thank you all, I got it working according to the instructions, but I didn't understand how to add it to autostart.sh
FOUND A SOLUTION:
Step 1: Change Output to PULSE: Default, Bluetooth Audio (PULSEAUDIO)
Step 2: Run pactl load-module module-udev-detect command - this got the sound working and video does't stall anymore.
Step 3: Add that line to Autostart.sh