@Phil Hah! Thanks, this forum picked it automagically for me based on my email address 
I'm worried this seems to be with my ISP, as many AWS S3 pages are slow, but when I ssh into my server it's way faster from there.
I used GitHub - reorx/httpstat: curl statistics made simple for formatting
Server:
Connected to 34.204.163.152:443 from 100.64.15.2:39574
HTTP/2 200
date: Mon, 04 Jan 2021 17:21:36 GMT
content-type: application/javascript; charset=utf-8
content-length: 8493643
server: nginx
x-ratelimit-limit: 200
x-ratelimit-remaining: 182
x-ratelimit-reset: 1609780896
cache-control: max-age=315360000
etag: "5463ac5c6602ba002b15faca9ce4356d99cc5d4d"
last-modified: Thu, 26 Nov 2020 09:34:18 GMT
Body stored in: /tmp/tmpCEvn1o
DNS Lookup TCP Connection TLS Handshake Server Processing Content Transfer
[ 7ms | 119ms | 526ms | 126ms | 15308ms ]
| | | | |
namelookup:7ms | | | |
connect:126ms | | |
pretransfer:652ms | |
starttransfer:778ms |
total:16086ms
Local:
Connected to 34.204.163.152:443 from 192.168.179.2:50714
HTTP/2 200
date: Mon, 04 Jan 2021 17:22:31 GMT
content-type: application/javascript; charset=utf-8
content-length: 8493643
server: nginx
x-ratelimit-limit: 200
x-ratelimit-remaining: 197
x-ratelimit-reset: 1609780952
cache-control: max-age=315360000
etag: "5463ac5c6602ba002b15faca9ce4356d99cc5d4d"
last-modified: Thu, 26 Nov 2020 09:34:18 GMT
Body stored in: /tmp/tmpUEaR0V
DNS Lookup TCP Connection TLS Handshake Server Processing Content Transfer
[ 30ms | 108ms | 232ms | 216ms | 550394ms ]
| | | | |
namelookup:30ms | | | |
connect:138ms | | |
pretransfer:370ms | |
starttransfer:586ms |
total:550980ms