But server lags have nothing to do with Fougerite or even Rust. I'll tell you what may be wrong:
1. You hosting it by yourself on some PC in house - You have bad internet connection and can't host server.
2. If you have it on payed host:
a) CPU is bad and can't afford even one player in Rust,
b) RAM is bad,
c) Connection is bad.
Usually payed hosts (VPS, Dedicated etc) have good connections. But you said that your server is 10 foot from you, so it's probably just selfhosted in home. I'll say it even better.
Games from years 2000-2006 (Enemy Territory, GTA SA:MP) required internet connection at least 512kb/s per player. That mean if you have internet connection 2 mb/s, you could host only 4 players, and not counting yourself. If you want to play on your own server hosted in house you need to connect from same pc by localhost (net.connect localhost

ort), to not waste your Connection. But it will cause laggs for other players, because your CPU will work more on your own game, than on server.
But now times changed, and for good gameplay you need connection from 1 mb/s per player, sometimes even 2 mb.
So if you want to host 25 players on your server you need at least 25 mb/s and of course some good CPU+RAM for rust. And it's of course not all, because hosters/services can do limits for your connection and even you have 200 mb/s, you can have only 10 connections at once.
Hope you understand it more. If you want to have server, get 10-30$ and buy it for month.