Trading Systems Lab

Practical notes on EA building, MT5 testing, risk control, and market timing. Less hype, more systems.

Tip: Use short keywords like “London”, “ATR”, “spread”, “JPY”.

Common EA Coding Mistakes That Quietly Kill Performance

Discover the most common EA programming mistakes in MQL5 that silently destroy performance. Learn how small bugs, poor assumptions, and optimization errors quietly drain profitability in real trading.

EA programming mistakes MQL5 bugs EA optimization trading system errors MT5 EA development
2026/01/26

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EA optimization (1) MQL5 bugs (1) MT5 EA development (1) trading system errors (1) EA programming mistakes (1)
How to use this blog
  • Pick a session (Tokyo/London/NY) and test one idea.
  • Use fixed risk per trade, then optimize only after stability.
  • Bookmark your best setups and keep a track record.