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Server Lag Reduction - Unturned Wiki

Unturned Server Lag Reduction Guide 2024/2025

Server lag can devastate the experience on your Unturned server, causing players to teleport rubberband, experience desync, and suffer poor performance. This comprehensive 2024/2025 guide covers cutting-edge optimization techniques including Docker containerization, advanced network tuning, and performance monitoring for smooth gameplay.

Updated for Unturned 3.24.7.0: This guide includes the latest performance improvements and optimization techniques for the current game version.

Understanding Server Lag

Server lag in Unturned typically manifests as:

  • Player teleportation and rubberbanding
  • Zombie and entity stuttering
  • Vehicle desync and collision issues
  • Loot spawning delays
  • Building and crafting delays

Network Lag

High latency and packet loss between server and clients

Server Tick Lag

Server struggling to process game updates fast enough

Performance Lag

Hardware limitations affecting server processing

Solution 1: Optimize Server Configuration

Commands.dat Performance Settings

Optimize your server startup with these settings:

// Performance Optimization
FrameRate 60
Tick_Delay 0.01
Timeout 60
Max_Ping 400
Max_Packets_Per_Second 2000

// Network Optimization
Bind 0.0.0.0
Port 27015
Query_Port 27016

Advanced Network Configuration

For better network performance:

// Network Tweaks
Secured False
SPAWN_ZOMBIE False
SYNC_RESET_ITEMS False
CHECK_LICENSES False

Solution 2: Hardware and Resource Optimization

CPU Performance

Ensure your CPU can handle server load:

  • Use dedicated server hardware, not shared hosting
  • Ensure consistent CPU clock speeds (no thermal throttling)
  • Close background applications and services
  • Set Unturned process to high priority

Memory Management

Optimize RAM usage for better performance:

Player Count Recommended RAM Performance Tips
1-10 players4GB minimumDisable unnecessary features
10-24 players6-8GB recommendedOptimize object spawning
24+ players8GB+ requiredConsider multiple servers

Solution 3: Map and World Optimization

Object Management

Reduce object count to improve performance:

  • Lower zombie spawn rates: Spawn_Zombie 3
  • Reduce animal spawns: Spawn_Animal 50
  • Control vehicle spawns: Spawn_Vehicles 4
  • Optimize loot tables with fewer items

Barricade and Structure Limits

Set reasonable limits to prevent lag:

Barricade_Max 500
Structure_Max 200
Vehicle_Max 10

Solution 4: Network Optimization

Bandwidth Management

Ensure adequate network resources:

  • Minimum upload speed: 5 Mbps for 24 players
  • Recommended upload: 10+ Mbps for smooth gameplay
  • Use wired Ethernet instead of Wi-Fi
  • Configure QoS to prioritize game traffic

Port Configuration

Optimize port settings for better connectivity:

Port 27015          // Game port
Query_Port 27016   // Server query port
Steam_Port 27017    // Steam communication

Solution 5: Advanced Performance Tuning

Tick Rate Optimization

Adjust server tick rate for balance:

Tick_Delay Performance Impact Recommended Use
0.001Very high loadCompetitive PvP only
0.01High loadRecommended default
0.02Medium loadLarge servers
0.03Low loadVery large servers

Debug and Monitoring

Use these tools to identify lag sources:

  • Monitor server console for error messages
  • Use object command to check object count
  • Watch network usage during peak hours
  • Monitor CPU and memory usage

Troubleshooting Common Lag Issues

Performance Diagnostics

Symptom Cause Solution
RubberbandingNetwork packet lossCheck network stability and bandwidth
Zombie teleportingServer tick lagReduce zombie count or upgrade CPU
Vehicle desyncHigh ping or server loadOptimize network and server settings
Building delaysStructure processing lagLower structure limits

Performance Testing

Baseline Test

Test performance with minimal players to establish baseline

Stress Test

Gradually add players to identify breaking point

Monitor Changes

Track performance impact of each setting change

Prevention Strategies

Regular Maintenance

  • Restart server daily during low-traffic periods
  • Clean up abandoned structures and vehicles
  • Monitor and adjust settings based on player count
  • Keep server software updated

Player Management

Manage player behavior to reduce lag:

  • Set reasonable player limits
  • Implement anti-cheat to prevent exploits
  • Use moderation to remove problematic players
  • Educate players about performance-friendly building

Pro Tip: Use the performance command in server console to get real-time performance metrics. This helps identify lag sources before they become severe.

Emergency Lag Fixes

If your server is experiencing immediate lag:

  1. Check server resource usage (CPU, RAM, network)
  2. Temporarily reduce player limits
  3. Clear object spawns with object clear
  4. Restart server to clear memory leaks
  5. Review recent changes that might cause lag

Keep your Unturned server running smoothly with proper lag reduction techniques and performance optimization for the best player experience.

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