It's the same with my dedicated server. Starting at 1.5 GB and after 10 hours it uses more than 5 GB - even if no people played on it. Before my last restart it uses more than 8 GB. The savefile is about 20 MB.
So I had to restart it every 12 hours manually (cause there's NO rcon port to send a restart to the server), otherwise I think it will crash.
So how can I solve this? My host got only 16 GB (and 8 CPUs) and I'm afraid the host/server crashes. Stay always at home? If I travel away a few days and it or even the host will crash, all my friends won't be able to play. Or is the a command to aumatically restart it? I'm afraid of just killing the task will destroy the savefile...
There are several game servers running on my host and NONE of them uses more and more memory - even Ark (Survival Evolved) starting at 4 STAYS at 4 GB, even after 3 days.
Will there be a solution? Otherwise for my next trip I had to stop the gameserver.
Best regards & hoping for a solution,
Stefan aka Dallarius