MT5 build 2007 - optimisation is broken. Rerun of tests silently fail. Often optimisation results give wildly different results when ‘Run Single Test’. Number of CPU cores affects results.
I have Version 2007.
Optimization showed one result, then when I ran it the result was almost twice the optimization. seemed weird.
I am doing a test presently......... will see if similar occurs.
I observed the same behaviour with Build 1995 on a fresh Windows 7. A have tried so many things in vain that I think it's better to let it be and wait for a fix. Until then I'll optimize with MT4 and port the results to the mql5 EA.
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Having become quite frustrated with MT5 builds 2006 and 2007, I decided to create a reproducible case using MQL example code (Moving Averages EA) for illustrating the problems with the optimiser and test run environment.
I welcome others to reproduce these tests and establish any patterns that can be fed back to development.
MT5 Build 2007 Optimiser Bugs Repeatable Case With Brand New MT5 Installation
Objective: Clean, reproducible case of broken MT5 Build 2007
To remove variables that could affect the reproducible case, the test setup needs to be reproducible by anyone:
Findin gs:
In my testing across 2 different computers with brand new MT5 installations:
How can we pick the best parameters for analysis and trading?
Parameters picked in good faith from this build of the Optimiser may in fact be disastrous when trading.
Given how bad this release is, I question the commitment to improving quality of MT5 releases. What regression testing and test driven development (TDD) is in place?
In my conclusion, I believe MT5 builds 2006/2007 to be fundamentally broken. I think it would take a brave soul to use this software for trading, development or EA optimisation.
I urge Development to get a fixed release out ASAP.
Full screen shot based report showing the repeatable case attached.