Vue.js Infinite Scroll has several potential rendering issues, especially with complex components. Here are some strategies to address these:

1. Use the v-infinite-scroll directive: The most common and recommended way to implement infinite scroll in Vue.js is by using the v-infinite-scroll directive provided by the vue-infinite-loading package.

   Install the package via npm:

   npm install --save vue-infinite-loading
   

   Register it globally or in your component:

   import Vue from 'vue'
   import infiniteLoading from 'vue-infinite-loading'
   
   Vue.use(infiniteLoading)
   

2. Use the v-lazy directive to preload images: Use the v-lazy directive to load your images lazily, which can improve performance and reduce initial page loading time. This will help in reducing the rendering issues you might be seeing with large number of items.

   Install the package via npm:

   npm install --save vue-lazyload
   

   Register it globally or in your component:

   import Vue from 'vue'
   import VueLazyLoad from 'vue-lazyload'
   
   Vue.use(VueLazyLoad)
   

3. Use <keep-alive>: If you have complex components that are not reusable, consider using the <keep-alive> component to preserve their state during scrolling, thus reducing unnecessary renders and improving performance.

4. Paginate your data: Instead of trying to load all data at once, use pagination to fetch a small chunk of data at a time until there's no more data left to load. This will reduce the number of items rendered on each page and improve overall performance.

Example usage for v-infinite-scroll:

<template>
  <div id="app">
    <ul>
      <li v-for="item in items" :key="item.id">{{ item.name }}</li>
    </ul>
    <infinite-loading @reached-end="loadMore" spinner="spiral"></infinite-loading>
  </div>
</template>

<script>
import InfiniteLoading from 'vue-infinite-loading'

export default {
  components: {
    InfiniteLoading,
  },
  data() {
    return {
      items: [], // Your initial list of items
      page: 1, // Current page number
    }
  },
  methods: {
    loadMore() {
      // Fetch more data from your API and add it to the `items` array
      this.page++
      fetchData(this.page).then((newItems) => {
        if (newItems.length === 0) {
          this.$refs['infinite-loading'].$emit('loaded')
        } else {
          this.items = [...this.items, ...newItems]
        }
      })
    },
  },
}
</script>

In this example, the loadMore method is called when the infinite scroll reaches the end of the list. It fetches more data and adds it to the existing items array. If there are no more items left to load, it emits a 'loaded' event on the infinite loading component.