LG 5K UltraFine - 4 screens: 15" MBP+2LG+1ACD - YT in UHD 4K 2160p (fullscreen, MIRRORED mode).

As per title:
LG 5K UltraFine demo.
4 screens:
- 15" MBP maxed-out model (2016)
- 2x 27" LG 5K displays.
- 1x 27" Apple Cinema Display.
playing a: YT in UHD 4K 2160p (fullscreen, MIRRORED mode).