I can say that 1-2% speed improvement helps conversions. We can see it in the graphs when the API slows down, people don't sign up. Perhaps the context of the

I can say that 1-2% speed improvement helps conversions. We can see it in the graphs when the API slows down, people don't sign up. Perhaps the context of the service plays a role - for us were are convincing people who might be a little more reluctant to sign up while other services are in high demand and no amount of friction is going to prevent a sale or signup.