I can see where you are coming from with the idea itself, and I can understand the frustration.
Even though FH does not have breaking visuals for a game it's still very demanding as soon as a few characters are in the same spot or a map is overloaded with meshes. This isn't exactly a sims game from from the early 2000s.
Keep in mind, that even though getting a server might sounds like a good idea if FH keep growing and got a very big community, the game would pretty much stay the same. The lag you seem to be so annoyed about is most likely the framerate that is controlled by how powerful your computer is, and how demanding the game might be. Even if you buy a new laptop today you still bump into lag at times if in a crowded area, but it's also a matter of which in game settings you have or possibly even running other programs at the same time.
This is by NO means any boasting, but I myself sit on a desktop computer that were built after the release of FH with the money of 2000 Euros, just because I want the sharpest quality and nothing reduced, I still bump into awful frame drops in crowded maps. A suggestion would be to read this quick post explaining the ingame settings.
https://feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10423.msg144855#msg144855If turning everything down in the game to a lower quality you will get a performance boost, but if you run an older computer this might not increase that much.
In general, the servers might have a tiny claw in the situation, but far from what your computer(s) has to do with running the actual game. A server that runs FH is far from cheap and isn't exactly a "Want, just get" situation if that's understandable.