React Native FlatList Rerender Problems

So I have this selection FlatList where the user can select a country. When I press on a item it’s going to take a second and after the second it is displaying the checkmark.

The Problem is the second. The user cannot wait a second to see that the country was selected.

<FlatList
  keyExtractor={item => item.countryid}
  data={countryChoices}
  renderItem={({item}) => {
    return(
      <CountryComponent                                       
        item={item}
        conditionToCheck={country == item.countryname}
        onPress={() => setCountry(item.countryname)}
      />
    )
  }}
/>

This is my Flatlist. countryChoices is just an array with different objects for the countries. the conditionToCheck checks wether to show or to hide the checkmark. If the selected Country is equal to the item then it’s going to show the checkmark.

But after clicking on it it’s taking too long :/

I also tried wrapping the FlatList Item in a useCallback but it wasn’t (much) faster