I remember learning that you get about 100ms for a basic UI interaction before a user perceives it as slow. And you get about 1s for a "full page navigation", even if it's a SPA, users are a bit more understanding if you're loading something that feels like new page.
Getting under 100ms really shouldn't be hard for most things. At the very least it should be easy to get the ripple (or whatever button animation) to trigger within the first 100ms.
Getting under 100ms really shouldn't be hard for most things. At the very least it should be easy to get the ripple (or whatever button animation) to trigger within the first 100ms.