I'm not sure how is this is possible. Are you saying you managed to run the game on integrated GPU of your laptop?
Well, I'm impressed.
As for your question, lemme see: right click on the EoCApp.exe and press "Run using Radeon HD 7xxxM" Should be something like that.
Yep, it appears to be running on the Intel HD 4000, which explains why it runs so horribly even at the lowest settings. Unfortunately, there is no option in the right-click menu or properties dialogue for the game to use the 7570M---the only place I've ever been able to set this is from the Catalyst Control Center, and it has always worked with other games.