When conducting back-testing in Metatrader 5 you can select “tick by tick” level data. My question is, does this option really allow you test a strategy against real tick-by-tick data? Does MQL5 really and truly record every tick of trading that took place for the financial securities where this option can be selected in the Strategy Tester Screen?
What I am looking to do is see what is happening during the first minute after key announcements, such as rate decisions by central banks. If, for example you sold prior to the announcement, and the price shoots up, it makes a big difference whether you are able to close the sell position during the 1st tick of actual trading that takes place vs the 2nd or 3rd -because the price movement is volatile and the difference between these may be significant. Is it possible to conduct this sort of analysis on MT5 with accuracy, and if so, how far back can one go with this granularity of analysis?