Grass takes practice!!
I always played on hard and grass - each surface needs a change in mindset.
Wimbledon grass is different now. In the 'olden' days it would have played similar to your video but with a few less odd bounces (the courts are really looked after).
When you have experienced 'true' grass you can start to really appreciate the skill of the 'masters generation' of players. Try to imagine how Borg went from playing on Clay to winning Wimbledon in the space of a month.
I'd love to see old school grass or a similar playing surface introduced back onto the tour - it would make for different styles of play and (for me anyway) more interesting match ups.