Sakurajima Part 2: The Core Descent
The **Core Descent** update (Late 2025) marks the final chapter of the Sakurajima expansion cycle. This update introduces the subterranean **Abyssal Biome**, the **Ancient Pal-Summoning Altar**, and massive raid boss encounters that challenge even the highest-tier server hardware.
🌋 Expansion Highlights
- The Abyssal Biome: A massive cave system beneath Sakurajima with custom "Void-Variant" Pals.
- Ancient Altar: A new structure for summoning multi-stage raid bosses.
- Raid Complexity: Bosses now have "Minion Phases," doubling the server's entity count during encounters.
Hosting the Abyssal Biome
The Abyssal biome is uniquely CPU-intensive due to its verticality and complex pathfinding. In 2026, server owners should adjust their settings to prevent "Physics Lag" within these zones.
📉 Culling Subterranean Entities
Use the Pal.SubsurfaceSimRate setting (added in Dec 2025) to reduce the tick rate of Pals that are not in the same vertical chunk as players. A value of 0.5 is recommended for high-pop servers.
⚡ Pathfinding Optimization
Subterranean Pals often get stuck in narrow tunnels. Modern builds (v0.6.x+) include an Auto-Teleport Stuck Pal feature. Ensure WorkforceSanityCheck is enabled to prevent performance death from pathfinding loops.
Ancient Altar Summoning: Server Impact
Summoning a raid boss at the Ancient Altar triggers a "high-priority sync event." If your server has low RAM availability, these summons can cause a 5-10 second "World Freeze."
Recommended Altar Configuration (2026):
- Limit Concurrent Summits: Use the
MaxActiveRaidssetting to allow only 1 summon per server instance at a time. - Raid Mob Despawn: Set
RaidEntityLifespanto 300 seconds to ensure minion corpses are cleaned up immediately after the fight.
The 2026 Loot Transition
Sakurajima Part 2 introduced **Eternal Cores**, a new currency for high-tier server progression. As an admin, you can customize the drop rates for these in PalWorldSettings.ini to match your server's economy speed.
# Customize Eternal Core drop rates for Bosses
EternalCoreDropRate=2.0
VoidVariantCaptureBonus=1.5
Troubleshooting Sub-World Crashes
Players are falling through the floor in the Abyssal Biome?
This is a **Map Chunk Sync** error common in late-2025 builds. Ensure your server's MaxNetworkClientRate is set to at least 1,000,000 to handle the burst of map data required for the caves.
Server FPS drops to 5 during Raid Bosses?
This is likely due to **Damage Numerical Spam**. Use a server-side mod to disable damage numbers for non-players, or reduce the EffectVfxLimit in your server configuration.
Can I host Part 2 on 16GB of RAM?
For small groups (1-4), yes. For public servers, **32GB is the minimum baseline** for the Sakurajima Part 2 era due to the increased memory footprint of the subterranean textures.
Next Steps
Raid-Ready Hosting: Supercraft’s **Pal-Titan** plans feature high-bandwidth NVMe storage designed to stream Abyssal map data with zero stutter. We include pre-configured Altar limits to keep your server stable during the toughest boss fights.