Good day John, Frank and Ozzie,
John : We have sent you an email to answer your questions.
This HFT system has been tested on demo and real accounts.
The problem comes from the liquidity providers, they consider it 'toxic', because it is too fast.
The other problem is MT4. It is not designed for HFT systems. The common problems we may have are the execution and the slippage, even on small trades.
So we are working on a new version, running threw API FIX.
We have other algorithms that work well under MT4. Not HFT, more day-trading strategies.
Best regards,