It's definitely slower than the default database or even the earlier mods. Not sure really how to fix that, I think its because of the size of the database. Its got loads of characters and all of them have already debuted. Along with that, it has more companies and teams. You can do things like turn off local shows and organic biographies to help a little. You'd probably need to retire some fighters and inactivate some companies if you want fast loading times but it may hinder your game