It's so slow to download Starfinder from Paizo website, it's a shame. Chrome is saying it will take 3-4 hours left for a 143MB file...
I downloaded a similar (~160MB) from Jetbrains in 2 minutes on the same connection so the issue is with Paizo site.
Ive had several failed attempts over 12 hours. Each estimated taking 3-4 hours before crashing at the around the 100mb mark.
Everybody in the US is hitting the server at the same time. no server can stand up to that.