Many sites on Stack Exchange network are showing a nice banner for newsletter in their sidebar, with a link to example newsletter, e.g.
However, this results in blank dialog window that showing just white for over 10 seconds. Most users will just close it by then.
Quick look in Network tab of Chrome dev tools showing the cause:
That's not normal. ALL other things on Stack Exchange works fast. Can the example newsletter please be cached somehow and load faster?
If the speed can't be improved, the link should really be removed, it's not good and only irritate those who click it.
It's also not specific to one site, e.g. I also checked Arqade Newsletter and it takes the same looong time to load.