How do you optimize Vue app performance for large-scale lists?

Use Virtual Scrolled lists, v-memo, and shallowRef for the data array.

For extremely large lists (10k+ items), standard rendering fails. 1) Virtual Scrolling: Only render items visible in the viewport. 2) shallowRef: Prevents Vue from making every nested property of the list reactive, saving huge amounts of memory and CPU. 3) v-memo: Skips re-rendering items that haven't changed.