Hello al_kuwait,
we are basically stopping the EAs before the news where we expect “unexpected” moves, such as quick moves or gaps or slippage from the brokers, where actually the market is moving so fast and they can hit the SL or reverse the trend direction. So basically there is no rule that we follow, just based on our experience and on the news ahead of us, we pause the EAs. What we would suggest you is actually to test with stopping and without stopping and with the time you will see which one works best for you.