The code you provided is an object for a Vue.js component that has several properties including 'methods' where methods like handleUpload are declared to be called when some event occurs. In particular, there's no error handling which would prevent crashes, but otherwise it looks good.

However, the last three lines might make sense within a specific context (if they're part of another function). It seems like after loading data with reloadTable(), CardTable.reloadTable() calls must have been executed properly.

To optimize, if we're expecting more complex use cases, consider using computed property instead of directly calling $store, since Vuex stores can act as state cache in this case:

export default {
  //...
  computed: {
    loadedData() { return this.data; } 
  },
}

This way, the computed will always contain current instance value rather than storing previous version locally into store, making sure re-renders occur much faster.

If all elements need to load before accessing them, consider using router's beforeEach lifecycle hook and pass down these props via route parameter

router.beforeEach((to, from, next) => {

// Your routes logic here...

})

It'll avoid unnecessary renders at every new page change, only rerender pages which needs data changes.

Regarding the mounted method, it does not seem necessary without side effects related to user actions/events - however, if you find performance bottlenecks during initial mount or if there's any unexpected behaviour due to other internal interactions, then you should keep that part.

Lastly, ensure that Vuex's sync strategy (createVNodeStore) aligns exactly with your components lifecycle hooks.

Remember, code quality greatly increases over time, so try to maintain your codebase regularly by refactoring and cleaning unused code periodically.