Hi Sam,
If UE-20600 came back as invalid, can you tell us what was problem? thread you linked to above seems to indicate there is still a problem with servers not sending proper gzip response headers even though they have static compression enabled.
I have a project that runs fine on my web server as long as I uncompress all files from packaged project and remove gz referenced from HTML file. I use Abyss Web Server (supports compression, tested that it’s enabled at HTTP Compression Test / WhatsMyIP.org) and have added Access-Control-Allow-Origin: * (no errors in chrome console).
Is outcome of this, for now, that we still need to use uncompressed?