Tableview reloadRowsAtIndexPaths gain to 50% CPU Memory?

I have an issue where I have a UITableViewController and when the view appears I do some calculations asynchronously which should result in the updating of specific rows in the table.

Inside the cellStartEditing function I calculate the necessary rows that need to be updated as follows:

-(void) cellStartEditing:(templateRow *) row{
    int Cellowid= row.rowId;
    [arrQuestions removeObjectAtIndex:CellRowid];
    [arrQuestions insertObject:row atIndex:CellRowid];
    NSIndexPath *indexPath = [NSIndexPath indexPathForRow: inSection:0];
    [tvQuestion reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
}

At that time reloadRowsAtIndexPaths Animation gain to 50% CPU Memory ?