alt Hacker NewsA lot of times, that makes the order come slower. A higher tip means the app will pair your order with someone else that didn't tip or tipped smaller, using your money to make up the difference. I consistently get faster deliveries when I tip towards "the average" instead of over tipping
Why would you keep using an app that you suspect was cynically exploiting your generosity like that? I’d drive every time rather than encourage such behaviour.