hi. i have a server. i made a vps with 8gb ram, 9core cpu, 50gb ssd evo. also server size is 3500. when i run server, fps is about 150. after some hour FPS will be about 5 - 15. what can i do?! i tested every thing. vps resource re so good and i dont know what s the problem?!

Provide us your serverinfo and plugins output.

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Both are commands.

with 6 player fps will be about 5. but when i restart server it will go to 150. after some hours come back to 5.
IP: 158.58.188.6:28020
link: http://playrust.io/map/?158.58.188.6:28020
name: [IR] ShadowGames.IR [5x/kit/remove/sethome/betterloot.5x/voted
01 "AutoDoors" (3.1.2) by Wulf/lukespragg (0.38s) - AutoDoors.cs
02 "Better Chat" (5.2.1) by LaserHydra (8.50s) - BetterChat.cs
03 "BetterLoot" (3.0.0) by FuJiCuRa / dcode (34.83s) - BetterLoot.cs
04 "BGrade" (1.0.49) by Ryan (0.75s) - BGrade.cs
05 "Clans" (0.1.53) by k1lly0u (0.10s) - Clans.cs
06 "Death Notes" (6.2.0) by LaserHydra (14.20s) - DeathNotes.cs
07 "FriendlyFire" (1.6.0) by playrust.io / dcode (5.80s) - FriendlyFire.cs
08 "Friends" (2.2.5) by Nogrod (0.25s) - Friends.cs
09 "Furnace Splitter" (2.2.0) by Skipcast (9.63s) - FurnaceSplitter.cs
10 "Gathering Manager" (2.2.61) by Mughisi (0.38s) - GatherManager.cs
11 "HeliControl" (1.3.2) by Shady (6.39s) - HeliControl.cs
12 "HeliVote" (0.1.32) by k1lly0u (0.05s) - HeliVote.cs
13 "HitIcon" (1.5.9) by serezhadelaet (0.58s) - HitIcon.cs
14 "InfoPanel" (1.0.0) by Default (36.83s) - InfoPanel.cs
15 "Instant Craft" (2.1.3) by Orange (0.87s) - InstantCraft.cs
16 "Kits" (3.2.93) by Reneb (7.11s) - Kits.cs
17 "Loading Messages" (1.0.5) by CosaNostra/VVoid (4.25s) - LoadingMessages.cs
18 "Cash System" (1.0.5) by Iv Misticos (0.17s) - CashSystem.cs
19 "No Give Notices" (0.2.0) by Wulf/lukespragg (0.01s) - NoGiveNotices.cs
20 "NTeleportation" (1.0.58) by RFC1920 (7.13s) - NTeleportation.cs
21 "PlayerList" (0.3.2) by Wulf/lukespragg (0.01s) - PlayerList.cs
22 "Popup Notifications" (0.2.0) by emu / k1lly0u (0.35s) - PopupNotifications.cs
23 "Death Notes GUI" (1.0.0) by LaserHydra (0.35s) - DeathNotesGui.cs
24 "Quick Smelt" (5.1.3) by Iv Misticos (2.11s) - QuickSmelt.cs
25 "RemoverTool" (4.2.10) by Reneb/Fuji (0.75s) - RemoverTool.cs
26 "Stack Size Controller" (2.0.3) by Canopy Sheep (0.04s) - StackSizeController.cs
27 "TimeOfDay" (2.3.4) by FuJiCuRa (0.01s) - TimeOfDay.cs
28 "Trade" (1.2.42) by Calytic (0.00s) - Trade.cs
29 "Magic Panel" (1.0.4) by MJSU (0.85s) - MagicPanel.cs
30 LustyMap - Unloaded
31 SimpleLogo - Unloaded

Is this information enough?

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"Hostname": "[IR] ShadowGames.IR [5x/kit/remove/sethome/betterloot.5x/voteday/3k.map...]",
"MaxPlayers": 500,
"Players": 0,
"Queued": 0,
"Joining": 0,
"EntityCount": 73092,
"GameTime": "09/14/2024 20:08:25",
"Uptime": 748,
"Map": "Procedural Map",
"Framerate": 166.0,
"Memory": 1246,
"Collections": 105,
"NetworkIn": 0,
"NetworkOut": 0,
"Restarting": false,
"SaveCreatedTime": "02/19/2020 17:54:35"
}

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frame is 166 because i restarted server 5 min ago.

No serious Rust owner would ever run a server on a VPS. 
You can expect nothing but lag.
8GB of ram also is not enough to run a Rust server.

where you run your servers?! I didnt buy vps. I made a vps from my case server. You can call it vds.
Port 1Gb
Cpu 4* E7 8870
Ram 400gb
4*SSD Evo
So what s the problem? Why i dont have to run server in my vds?
All of resources that i put for this server are dedicate.
And for ram. I checked task mamager. Just 7GB from 8GB was full and i had 1GB ram for frew usage. 

The first Westmere-based processors were launched on January 7, 2010, by Intel Corporation.

And running 4 of them might be worse than just one, this is a single-threaded application.
Are they all running in quad-channel?

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400GB of memory divided by 32 memory slots is 12.5GB per module.
You should specify your memory configuration.

Probably he meant 400 GB SSD lol, because other messages state that he has 8 GB RAM

oh, you are running 2x 1GB on each processor? end that machine's suffering and get yourself a $300 computer that can run a Rust server better than that heating element.

Herro

8GB of ram also is not enough to run a Rust server.

8GB of RAM is definitely enough for 2 servers, both of those are 3750 map size.

an empty server uses around 3+ lol that's even smaller

After starting up each server can use up to 4GB but it goes down to about 1~1.5GB per server.

But he said almost 4000 map not the 2000 one, and I am running a few servers, some are for testing and are smaller and empty but still consume a few GBs. Yea map isn't < 3000 but still

Your hardware is not enough for the Rust server that you're trying to host. Game servers require different kind of CPU power than something like web application, especially Rust. Gaming CPUs are popular among game server hosting, ex. 7700k, 8700k, 9900k etc. You could use some kind of Xeon as well, however it's performance will be not as good.