Time after time we're getting reports about slow PhpED download. Not often, but still it's not good.
When it happens, it's caused by issues with cross-ocean links or some networks in between and we have really nothing to do in this case. But well, why nothing? We can provide our product from a much closer location if we take advantage of AWS CloudFront and it's expected to work faster. This is what we implemented today. Let me know if it works better for you -- login to your account, navigate to My Products and check both -- Original Site and CDN. I hope CDN works very fast for you.

According to some customers reported privately, CDN shows from 1.2 to 6 times load time improvement. So availability is way better now, especially for far countries like Japan and some parts of Europe, Asia and Australia.