MT5 and CPU?

[Gtrade]

In order to speed up an indicator in MT5, what is the most important feature of CPU?  Number of cores, clock speed, samples etc?

[William Roeder]

None of the above.

1. EAs : Don't do per tick what you can do per bar, or on open.
   If you are waiting for a level, don't reevaluate, wait until price reaches it (or a new bar starts, and you recalculate.)
   If you are waiting for an order to close, only look when OrdersTotal (or MT5 equivalent) has changed.
             How to get backtesting faster ? - MT4 - MQL4 programming forum (2017)

2. Indicators: Code it properly so it only recomputes bar zero (after the initial run.)
             How to do your lookbacks correctly. (2016)
   Or, reduce Tools → Options (control+O) → Charts → Max bars in chart to something reasonable (like 1K.)