If you have a "Café". Make sure you put up a [RP HOUSE] sign. So people won't blow it. Otherwise it's against the rules and most people with explosives have played enough to know that rule and therefore won't break it.
The fun challenge with Zarp when someone is bombing your base actually gives you an adrenaline kick if you have printers to defend. When you manage to kill all raiders you will feel a reward and you will be able to keep printing until they give up.
This makes Zarp competetive. With gangs, explosives and such. And since lag is the only problem Zarp is having you should be proud of being apart if this community. Garrys mod have a really shitty engine so don't be fully suprised if the lag never completley vanishes.
Finally I would like to talk about RDMing on the server. Today me and my friends were trying to build a base but were constantly being RDMed by people with a sniper. I admit I didn't F1 it since i has faith in the admins to deal with it but they didn't. I always see admins walking around the streets yet they failed to see mass RDM but someone with a sniper and mass police RDM. This shouldn't happen and the admins should've noticed this.
Really? You expect admins to be some gods? How can they know if it's RDM or an roleplay situation? It's your responsibility to make this not hapen.