Bug/Issue Server Memory Leak

I set up the Starbound dedicated server as described on the wiki on a t2.medium instance on AWS. Leaving this running for any amount of time > 4hrs almost inevitably results in the server becoming unresponsive, to the point where I can't even SSH into it to see what's going on. I mitigated this by placing a 3GiB cap on the address space (via LimitAS in the systemd service file) but naturally this just responds in the server crashing when trying to allocate more memory.

This is entirely vanilla, no mods, so I have no idea why the server isn't stable. It seems kind of ridiculous for it to be so resource-hungry. This has also caused multiple players' ships to be completely wiped when the server crashed, seemingly at random. Are there any known fixes/causes for this behavior?