MT5 strategy tester work well but not in live account

 
I guess if an EA work well in live account, it may not be good in tester. If I am right, what should I do to improve my EA ?
 
Kam Yuk WongI guess if an EA work well in live account, it may not be good in tester. If I am right, what should I do to improve my EA ?

First, check the Journal and Experts tabs in your terminal to see if there are any errors or warnings when running live.

If there are no errors, then:

  • Test with real tick data and variable spreads.
  • Simulate slippage.
  • Avoid overfitting to historical data.
  • Forward-test on demo before live.