@kylemeyer Thanks for the suggestions. I've been working on optimizations to load most of the JS asynchronously, and general optimizations: CSS, unused code, etc.
The cache.backpackinglight.com server is an Amazon S3 CDN, so perhaps there are some latency issues with it. I'll look into that also.
I just recently added the new cookie script, and wanted to make sure it's solid before removing the old one. It's using HTML caches, so hopefully we'll see some speed increase for those browsers.
Otherwise, I'll check with our host to see if they are seeing anything.