Best Anti-Lag solution for PaperSpigot server 1.15?

[Kryth]

I have a server called "Berrycraft", the IP is: berrycraft.org
I'm having an issue where for the first few seconds a player joins the server, it is extremely laggy for a solid 5 seconds or so and then it seems to go back to being smooth. We still have occasional hiccups in lag spikes. We only have like 25 plugins, we have 4GB of RAM, and peak playerbase is never more than like 5 or 6 people.

Any recommendations for how to optimize the server or fix these lag spikes, especially upon logging in at the spawn/hub?

Willing to pay for working solutions.

 

[Reyn]

If you’re using Shared Minecraft Hosting, I’d recommend contacting them regarding your servers performance, or simply move to another provider which may provide better hardware. Also, there are many plugins (Both free + paid) that allow you to monitor your server’s performance, and locate what may be causing the issue.