Hainan flight HU 495 Beijing to Seattle take off

This is Hainan airlines flight HU 495 Beijing PEK to Seattle Sea-Tac on a Boeing 787-8 Dreamliner. Take off was low speed and slow climb. The map on the IFE was not functioning so I don't know the take off speed but it seemed as if the engines struggled at bit and very turbulent.

[@ColeWhitman]

Are you going to upload the landing video?