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Allowing for slippage, broker spreads and broker commissions in the new MT5 strategy tester....

Hello, All trading system developers and researchers understand that when doing a backtest it is very important to factor in amounts for "slippage", "broker spreads" and "broker commissions", and if a backtest does not allow for these things then the backtest results will be invalid and will not be

Will there still be a 2 GB limit for FXT files in MT5 (like there was for MT4)???

Will there still be a 2 GB limit for FXT files in MT5 (like there was for MT4)??? This was a really bad limitation in MT4 as this meant I could only run a backtest going back only 5 years (using 1 minute bars) otherwise the FXT file would become greater than 2 GB and my backtest would not finish