validation with errors

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trades took to long, what can we do ?
 
You need to revise your code to enhance its performance before trying to validate it again.
 

  1. EAs : Don't do per tick what you can do per bar, or on open.
    If you are waiting for a level, don't reevaluate, wait until price reaches it (or a new bar starts, and you recalculate.)
    If you are waiting for an order to close, only look when OrdersTotal (or MT5 equivalent) has changed.
              How to get backtesting faster ? - MT4 - MQL4 programming forum (2017)

  2. Indicators: Code it properly so it only recomputes bar zero (after the initial run).
              How to do your lookbacks correctly. (2016)
              3 Methods of Indicators Acceleration by the Example of the Linear Regression - MQL5 Articles. (2011)
    Or, reduce Tools → Options (control+O) → Charts → Max bars in chart to something reasonable (like 1K.)

If you need help with code, you must post your code.

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