High-Performance Coding Tips

[Mohammad Sh]

I've been wondering what tips do you follow so that your Expert Advisors use are more stable, use less pc resources, not freeze, etc.

[Oleksandr Medviediev]

Everything needs to be done by the book
https://www.mql5.com/en/book

[William Roeder]

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 has changed. (In MT5 capture the deal out)
             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.)

[Fernando Carreiro]

Your topic has been moved to the section: Expert Advisors and Automated Trading
Please consider which section is most appropriate — https://www.mql5.com/en/forum/172166/page6#comment_49114893