I’m an nginx user, but my first question is are you throttling the web server? Otherwise, yeah you can serve a high bandwidth. Thank Digital Ocean. ;-) Running speedtest-cli:

Retrieving speedtest.net server list…
Selecting best server based on ping…
Hosted by Unwired (San Francisco, CA) [5.79 km]: 3.089 ms
Testing download speed................................................................................
Download: 907.93 Mbit/s
Testing upload speed……………………………………………………………………………………
Upload: 834.10 Mbit/s

That is a bit unrealistic. I picked some podunk server to test:
Retrieving speedtest.net server list…
Retrieving information for the selected server…
Hosted by Southwest Arkansas Telephone Coop (Texarkana, AR) [2598.65 km]: 99.602 ms
Testing download speed................................................................................
Download: 230.59 Mbit/s
Testing upload speed……………………………………………………………………………………
Upload: 113.17 Mbit/s

You serve at the upload speed. Still you handle 5 of those hogs.