Trading News & Fundamentals

How long do you personally wait before entering after a news announcement? 15 minutes? the following hour? I only trade news breakouts that meet my entry criteria, usually if the breakout goes in the direction of the overall trend.

Also, do news announcements stop other pairs from moving as fast or being volatile in a session? For example, if a lot of USD news was released during the NY overlap, would it mean GBP/JPY or EUR/JPY would see narrower pip movements for that day?

Thanks in advance.