The way to do arbitration can appear at any time in every market, so we must always monitor the price comparison in each market. Indeed there is a great advantage in conducting arbitration, but it is always balanced with the risks faced too.
Variations in problems often arise and are more towards delaying transactions and ultimately losing price momentum, this often happens with new coins to register new markets or arbitrage for the purpose of coin snapshots.
But if it happens in the time calculated according to the price movements that are experiencing the best trends, then this is not a problem, volume enlargement sometimes makes the price of coins in each market different and this still has the potential to be very attractive about profits.