There is no magic setup with MDP. This EA has shown to be the most difficult EA to setup and run profitably of any EA that has traded profitably ever. pepperstone is pretty much the absolute best broker to trade with of the recommended brokers. Most likely, you will not experience anything better than what you have been experiencing. Your only real option left is to use the group trades option and try for one good trade instead of several trades, which increases the difficultly of trading profitably exponentially.
Sorry for the lack of good news on this EA. The reason for the problems with it is---
#1 too many traders using the same system, and the system is a reversal scalper. The liquidity pool is dried up super quickly so the slippage continues to get worse and worse.
#2 trading on an MM style broker is no good. They make money when their clients lose money. If you are continuously successful, most likely you will have your account cancelled by the broker.
Whatever track record you have shown with MDP is likely going to continue, and even more likely, the performance will decrease as more and more people try to trade MDP. Good luck. You will need it.
Make losses, but always come out a winner at the end.