People Map Loading, Single Cluster loads

FriendMapListVC.m

-(void)findAndMoveToCenterOfTheCity:(POIItem1*)poiItem {
    NSLog(@"%s",__PRETTY_FUNCTION__);
    [self addClusterToRenderingArray:poiItem];
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    CLLocation *location = [[CLLocation alloc] initWithLatitude:poiItem.position.latitude longitude:poiItem.position.longitude];
    [geocoder reverseGeocodeLocation:location
                       completionHandler:^(NSArray *placemarks, NSError *error)
        {
            if (error || placemarks.count == 0){
                NSLog(@"Geocode failed with error: %@", error);
                [self removeClusterFromRenderingArray:poiItem];
                return;
            }
            //Getting city name to center of the city coordinates
            [self removeClusterFromRenderingArray:poiItem];

            CLPlacemark *placemark = [placemarks objectAtIndex:0];
            CLLocation *oldLocation = [[CLLocation alloc] initWithLatitude:poiItem.position.latitude longitude:poiItem.position.longitude];
            CLLocation *newCenterLocation = [[CLLocation alloc] initWithLatitude:placemark.region.center.latitude longitude:placemark.region.center.longitude];
            double distance = [oldLocation distanceFromLocation:newCenterLocation];
            if (distance > 200) {
                [self removeItemFromCluster:poiItem];
                dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                    id<GMUClusterItem> item = [[POIItem1 alloc] initWithPosition:placemark.region.center name:poiItem.name markerData:poiItem.markerData];
                    [self->_clusterManager addItem:item];
                    [self->_clusterManager cluster];
                    NSLog(@"Added cluster to the center of the city");
                });
            }else{
                NSLog(@"Not adding marker.Distance is less than 10 meters.");
    //                                         id<GMUClusterItem> item = [[POIItem1 alloc] initWithPosition:centerOfTheCity.location.coordinate name:poiItem.name markerData:poiItem.markerData];
            }

        }];
    
}