Execution time is not a fixed parameter and depends not only on the networking performance but mostly on the execution process of the liquidity providers. Most of the time when the liquidity is sufficient it takes much less than a second to fill an order, but the values can vary significantly depending on market conjuncture. Normally, on calm and liquid market, the execution time should be in range of 150-400 milliseconds, but during the periods of low liquidity, or extreme volatility (like news release situation for example) it may be and probably will be significantly higher. 

In the CopyFX system, it occurs simultaneously with the execution of the trader's order. This ensures synchronicity and allows investors to follow the actions of traders in real time.