Brawl ISO for Project M-CC does not work correctly (Dolphin 5.0)

[Dylan R.]

I downloaded an iso of Brawl, but it does not work correctly: http://g2f.nl/03zg7r9
I downloaded it special for Project M-CC: https://github.com/Project-M-CC/Project-M-CC

I use Dolphin 5.0 on my Windows 7:
Specs:
Processor: Intel(R) Core(TM) i5-3470 CPU @3.20GHz
Rating: 5,1
Installed memory: 8,00 GB (7,70 available)
64 bits

FPS goes down very quickly - a few seconds after startup already ... Is that because the specifications of the computer? Otherwise all would be fine?