Vue.js: How to optimize Vue app performance?

1<template>
2    <!-- v-once - static content -->
3    <div v-once>{{ expensiveComputation }}</div>
4    
5    <!-- Virtual scroll -->
6    <RecycleScroller :items="items" :item-height="50">
7        <template #default="{ item }">
8            <div>{{ item.name }}</div>
9        </template>
10    </RecycleScroller>
11    
12    <!-- Lazy loading -->
13    <Suspense>
14        <template #default>
15            <HeavyComponent />
16        </template>
17        <template #fallback>
18            <div>Loading...</div>
19        </template>
20    </Suspense>
21</template>