I am currently using one of the better virtual machines I have for personal use, hopefully after grant passes I get to move to similar machine but dedicated for this use.
What makes this one fast is use of indexes in mongo, i’ve had to create few extras to make it run, at cost of disk space.
Btw, I’ve made changes that enabled live update of motions/vote pages, just like original blockexplorer, that code was also missing from github 