Same here, 2 hours to install nginx only, and I have selected fast install.
and about 4 hours to install mysql maria, and then I didn't find it in my app store, tried like 5 times.
and mail server took also like 2 hours, and I have a fast US (north virigina) server (1 Gb network speed & 2 vCPU).
Your panel needs fix guys, please check these things before production.
Anyway, I have switched the panel and chose something else because all of these bugs and issues, I really don't understand what is your problem with just install the packages normally without compiling it! and also, why the heck do you have fast option when you do compile it anyway?! I really don't get it!