Python Dropbox API slow performance

The route you get to the Dropbox servers may be different than the route to get to the servers for other services, so a comparison with other services may not be applicable.

Anyway, Dropbox does not offer the ability to debug this from the Dropbox servers. You'd need to do any debugging on your side.

Looking at the code itself, I don't see any issues. I just tried this script myself, plugging in my path and key/secret/refresh token values, and the script ran in 2 seconds to successfully upload a 1 MB file.

I see you're using the Python SDK, so the following code would enable additional debugging output which might be useful:

try:
    import http.client as http_client
except ImportError:
    # Python 2
    import httplib as http_client
http_client.HTTPConnection.debuglevel = 1

import logging
logging.basicConfig(level=logging.DEBUG)
logging.getLogger().setLevel(logging.DEBUG)
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True

import urllib3
urllib3.add_stderr_logger()