Server for the modpack - https://github.com/Senteris/SentMinePack-server
This modpack has few mods created for comfortable and hard survival. You should not have a "super cool server with 312TB RAM and 110GHz processor" anymore. Just pregenerate the world and enjoy.
The modpack has magic, rpg and cosmic mods for new adventures. There are complicated crafts of some things and a lot of new mobs! Fight and be carefully... They are everywhere!
For comfortable game you need just 2GB RAM. If your server have not 2GB RAM, delete mod "chunkpregeneratorv1.12-2.2.jar" and downgrade your settings at settings.bat(or settings.sh) and server.properties.
client - modpack with some client only mods.
powerful-client - client only mods. Install it if you have not problem with perfomance.
conflicts-with-shaders - client only mods. Install it if you do not use a not-vanila shaders and if you have not problem with perfomance.
Please do not turn on spawn-npcs at server.properties. Villagers greatly facilitate the extraction of emeralds.