If there's an outrush of processing power, adjustment in the easing direction won't be as fast. (At least one smaller, post-Bitcoin cryptocurrency has faced a c

If there's an outrush of processing power, adjustment in the easing direction won't be as fast. (At least one smaller, post-Bitcoin cryptocurrency has faced a crisis when a large amount of hashpower withdrew... because the remaining hashing would take 'forever' to even advance to the next 'adjustment point'.) So this question is a bit early to call.