Is it possible to up a Minecraft server's tickrate from 20?
Solution 1:
In Vanilla the server tick rate is at most 20, unless it catches up from previously lagging.
To reduce or increase the tick speed there are various mods. Here are some examples:
www.youtube.com/watch?v=OMYWfjgaaMM
https://minecraft.curseforge.com/projects/tickratechanger
https://github.com/gnembon/carpetmod