An unfilled Limit Order will cost you more than a Market Order. It's a myth that Market Orders are filled at unfair prices - I use them all the time.
The spread will be widest during a time like this, you'll get the worst price using a market order but you will get filled of course
I didn't mean a worse price than the current bid ask. I meant that the spread may normally be 1.05/1.1 yet when is volatile the spread may be 0.9/1.3 So, you buy at 1.3, you're paying 20% more than you normally would. Things may settle the next day or with less volatility.