JAVA AWS SDK InputStream Upload speed

i'm trying to store the images in AWS S3 to serve them as static content in future.

I use Spring MVC, Spring Cloud AWS, AngularJS.

Have a strange issue with File upload to Amazon S3 bucket. uploading a File is very fast

2016-07-17 12:43:11,927 INFO  [http-apr-8080-exec-8] impl.S3FileServiceImpl (S3FileServiceImpl.java:39) - Upload started
2016-07-17 12:43:17,061 INFO  [http-apr-8080-exec-8] impl.S3FileServiceImpl (S3FileServiceImpl.java:46) - Upload done

But uploading image from MultipartFile received by Spring Servlet takes significantly more. Especially if File name is not in english.(no matter the size)

2016-07-17 12:53:50,715 INFO  [http-apr-8080-exec-9] impl.S3FileServiceImpl (S3FileServiceImpl.java:56) - Upload started
2016-07-17 12:54:16,897 INFO  [http-apr-8080-exec-9] impl.S3FileServiceImpl (S3FileServiceImpl.java:70) - Upload done

(here it took 26 seconds).

This is the service class i'm trying to make:

public class S3FileServiceImpl implements S3FileService {

    private final static Logger logger = LogManager.getLogger(S3FileServiceImpl.class.getName());

    @Autowired
    private AmazonS3 amazonS3;

    private final String bucketName = "bucket1";


    public S3FileServiceImpl() {
        if(amazonS3 != null) {
            logger.info("not null");
            if (!amazonS3.doesBucketExist(bucketName)) {
                amazonS3.createBucket(bucketName);
            }
        }
    }


    @Override
    public void uploadFile(String filePath, String fileName, File file) {
        logger.info("Upload Started");


        TransferManager transferManager = new TransferManager(this.amazonS3);
        Upload upload = transferManager.upload(bucketName,filePath +"/"+fileName, file);
        try {
            upload.waitForUploadResult();
            logger.info("Upload done");

            transferManager.shutdownNow(false);
        } catch (Exception e) {
            logger.error("error on file upload to S3: "+e.getMessage());
        }
    }

    @Override
    public void uploadFile(String filePath, String fileName, InputStream inputStream, long inputStreamSize, String contentType) {
        logger.info("Upload Started");

        TransferManager transferManager = new TransferManager(this.amazonS3);
        ObjectMetadata metadata = new ObjectMetadata();
        metadata.setExpirationTime(DateTime.now().plusDays(365*3).toDate());
        metadata.setContentLength(inputStreamSize);
        metadata.setContentType(contentType);


        Upload upload = transferManager.upload(bucketName,filePath +"/"+fileName, inputStream, metadata);
        try {
            upload.waitForUploadResult();

            inputStream.close();
            logger.info("Upload done");

            transferManager.shutdownNow(false);
        } catch (Exception e) {
            logger.error("error on file upload to S3: "+e.getMessage());
        }
    }
}

This is the controller from which i transfer a MultipartFile:

@RequestMapping(value="/upload_image", method=RequestMethod.POST)
public @ResponseBody JsonResponse handleFileUpload(@RequestParam("file") MultipartFile file, @RequestParam("filename") String filename){
    if (!file.isEmpty()) {
        try {
            String orgName = file.getOriginalFilename();
            String filePath =  "img_temp";


            logger.info("File name: "+orgName);
            //Format check

            if(!IsImage(orgName)) {retu new JsonResponse("FAIL","Is not an image: "+orgName);}

            //Upload
            s3FileService.uploadFile(filePath, orgName, file.getInputStream(), file.getSize(), file.getContentType());

            //Success
            retu new JsonResponse("OK","");

        } catch (Exception e) {
            retu new JsonResponse("FAIL","File uploaded failed: "+file.getName() + " => " + e.getMessage());
        }
    } else {
        retu new JsonResponse("FAIL","File uploaded failed: "+ file.getName() + " because the file was empty.");
    }
}

Main quiestion: Why is it so much slower from MutipartFile (input stream + metadata) ?

Also, by the way - there is a strange issue. In my IDE (Intellij 15.0.3) it shows this error: "No beans of 'AmazonS3' type found." in S3FileServiceImpl class. But still, it is found and working. This is the XML config:

<aws-context:context-region region="us-west-2"/>

<aws-context:context-credentials>
    <aws-context:instance-profile-credentials/>
    <aws-context:simple-credentials access-key="key" secret-key="key"/>
</aws-context:context-credentials>

<aws-context:context-resource-loader task-executor="executor" />
<task:executor id="executor" pool-size="10" queue-capacity="0" rejection-policy="CALLER_RUNS" />

<bean id="s3FileService" class="com.springapp.mvc.service.impl.S3FileServiceImpl"></bean>