Is there a significant difference, Forex is a slower market, but in the crypt it all depends on you, and the trade is easier and more profitable. As for me, Forex has passed the day, but many are more comfortable there or a habit.
You want to try a USD pair just after the monthly Non-Farm Payroll data is released or this afternoon when the FOMC statement comes out. Those algos the hedge funds are running on custom built machines colocated at the exchanges will rip your head off compared to crypto exchanges.