Performance in iOs simulator

Hi all,
I'm creating an iOs game. Until now I always only teste it on my iPhone 6 and I'm always up around 60fps. Today I decided to check how the UI looks on the iPad 2 but I don't own one so I deployed to the Xcode simulator and there I get around 1fps. I thought the problem was the iPad so I tried running the game on an iPhone 6 inside the simulator and there again I get 1fps. Real hardware = 60fps, simlator of same device = 1fps. Do you guys now what the reason could be?

Thanks!