Will writing large number of objects hang up my UI ?

**Question**
Hive is fast but I want to know if writing objects will hang up my UI ever and also will this code segment cause any problem :
**Code sample**
```dart
void function1(int i) async{
await box.add(i);
}
void function2()
{
for(int i=0;i<10;i++)
{
function1(i);
}
}
```
Should I use `await` inside `function2` as well or it will fine.
Edit :- Turns out it was my generator function which was hogging the UI.