There have been many threads like that recently, Maybe this one?
https://forums.thesims.com/en_US/discussion/972210/what-are-the-mods-you-find-essential/p1
Anyway, the NRaas mods we usually list as being designed especially to help preserve game performance are Overwatch, ErrorTrap, Register, Traffic, Traveler (if world travel of any kind is needed), to an extent GoHere, and MasterController (for its Town > Reset Everything command on City Hall). We also have hundreds of pages of documentation and forum boards on the NRaas site if you need assistance. :)