The Isle Evrima Server Performance: Slots, AI Density and RAM
Evrima load is not just “players online.” Player simulation, AI, world state, corpses and peak joins all compete for CPU and memory. A server that survives an empty test can still stutter when a full pack arrives, so leave headroom instead of setting the slot cap to the hardware maximum.
Practical starting points
| Community size | Starting RAM | CPU guidance | Use case |
|---|---|---|---|
| Up to about 25 slots | 8 GB | Fast 2–4 cores | Private group or event server. |
| About 50 slots | 12 GB | Fast 4 cores | Public community with evening peaks. |
| 100+ slots with AI | 16 GB or more | Fast 4–6 cores | Established community; measure before scaling. |
These are planning starting points from the Supercraft hosting profile, not a guarantee for every mod, build or AI policy. Evrima benefits from high single-thread speed more than from a large count of slow cores.
The highest-impact settings
[/Script/TheIsle.TIGameSession]
MaxPlayerCount=50
bSpawnAI=true
AIDensity=0.5
AISpawnInterval=60
CorpseDecayMultiplier=0.5MaxPlayerCountreserves a capacity target; it does not create CPU headroom.AIDensitychanges how much AI activity the world tries to maintain.AISpawnIntervaltrades replenishment speed for fewer spawn checks.- Faster corpse cleanup can reduce entity pressure, but changes gameplay pacing.
Diagnose lag before changing everything
- Record player count, AI setting, map, uptime and the time of the slowdown.
- Compare an empty-server baseline with a peak-hour sample.
- Reduce AI density or the slot cap for one test window.
- Only then change hardware or add more gameplay features.
If the server is unreachable rather than slow, use the connection timeout checklist. If it exits, use the startup/EOS guide.
Choose a managed The Isle plan with capacity matched to your community instead of paying for an arbitrary slot number.