The performance problem can be expected and is more related to the file size (big files require more time to be handled in general) and to system performance rather than to the function implementation itself.
You can improve the application speed when using this function implementing one of the following suggestions:
Thank you for your feedback.
You changed your response to Not Helpful
You changed your response to Helpful
Collaborate with other users in our discussion forums
A valid service agreement may be required, and support options vary by country.