This has been discussed 500 times already. Use the search function.
To answer your question: If you write a Linux distribution, add stuff dolphin needs, add drivers, and write a window manager exclusive for dolphin, you aren't really likely to get more performance than you would get on a normal distribution like Ubuntu. I wouldn't say it's impossible but it's harder than trying to swim through the pacific on one day.
To answer your question: If you write a Linux distribution, add stuff dolphin needs, add drivers, and write a window manager exclusive for dolphin, you aren't really likely to get more performance than you would get on a normal distribution like Ubuntu. I wouldn't say it's impossible but it's harder than trying to swim through the pacific on one day.