Difference between 1min ohlc and every tick testing

[wessel]

@roar and did you find a way to do this?

[roar]

Hi.

I am building a 5-min chart based ea on MT5.
If I test it with "Execution" setting as "1 minute OHLC", the tester gives about 1.5 profit factor.
But if i set the setting to "Every tick", the profit factor crashes to 0.3.

Is it possible to build the ea to behave like I tested on 1 minute OHLC data, and if so, any ideas how to do it in FxDreema?

[fxDreema]

http://www.mql5.com/en/articles/239
__Note: If the test results of the EA in the rough testing modes ("1 minute OHLC" and "Open Prices only") seem too good, make sure to test it in the "Every tick" mode.[/quote:2fv7xcil]

[roar]

@wessel Well, obviously my system was just too bad to work with real data.

If you want to reliably use OHLC testing (for faster backtesting), design your system in a way it doesn't use very tight stops or fast intra-bar changes. Best practise is to put "once per bar" on top of your project.