When trading during major forex-related news releases (like NFP and friends), a significant increase of spread may occur, some tutorials say. As I understand it, even if I've got a stop-loss order in place (or any other event-triggered order for that matter), it might be filled at significantly different prices to my disadvantage.
In all likelihood, this varies from broker to broker. Probably for that reason the first hour of googling didn't give me an idea, what such offset could be (is it called "slippage"?), statistically, at a major news event. Neither historical data nor paper-account won't help here, so my question is: what is your personal extreme experience with the difference between stop-loss order and the actual outcome?
I'm using Interactive Brokers / IDEALPRO.