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SDK 1.7 Preview
SDK 1.7 Preview
  • Welcome
  • Overview
    • Features
    • Roadmap
  • Getting started
    • Get the Unity SDK
    • Setup a project
      • 1. Scene setup
      • 2. Prefab setup
      • 3. Test your game locally
        • Local testing using builds
        • Local testing via Unity's Multiplayer Play Mode
        • Local testing via ParrelSync
      • 4. Test in the cloud
        • Deploy a Replication Server
        • Share builds
    • How to... ?
    • Single-player to multiplayer
    • Video tutorials
    • Samples and tutorials
      • Package samples
      • Sample Connection UIs
      • First Steps tutorial
        • 1. Basic syncing
          • 1.1 Animation parameters
          • 1.2 Sending commands
        • 2. Physics / Authority transfer
        • 3. Areas of interest
        • 4. Parenting entities
        • 5. Complex hierarchies
        • 6. Persistence
      • Campfire project
        • Game mechanics
        • Leveraging object pooling
        • Remote interactions: Chairs
        • Remote interactions: Trees
        • A unique object with complex state
        • Custom instantiation and destruction
        • Running a server-side NPC
        • Playing audio and particles
        • A simple text chat
      • Beginner's guide to networking
    • Troubleshooting
  • Manual
    • Unity Components
      • CoherenceSync
      • CoherenceBridge
      • CoherenceLiveQuery
      • CoherenceTagQuery
      • CoherenceGlobalQuery
      • CoherenceInput
      • CoherenceNode
      • PrefabSyncGroup
      • Order of execution
    • Networking state changes
      • Instantiate and Destroy Objects
      • Supported types
      • Messaging with Commands
      • Syncing child GameObjects
      • Animation
      • CoherenceSync references
      • [Sync] and [Command] Attributes
      • [OnValueSynced] Attribute
      • Creating your own syncable member
      • Custom Component Actions
      • Rigid Bodies
      • Interpolation
    • Authority
      • Authority transfer
      • Server-authoritative setup
    • Lifetime
      • Persistence
      • Uniqueness
      • Example: A global counter
    • Parenting network entities
      • Direct children CoherenceSyncs
      • Deeply-nested CoherenceSyncs
      • Nesting Prefabs at Edit time
    • Asset management
      • Instantiating from CoherenceSyncConfig
      • Instantiate via
      • Load via
    • Scene management
    • Multiple Connections within a Game Instance
    • Baking (code generation)
      • Conditional compilation
    • Replication Server
      • Rooms and Worlds
      • Replication Server API
    • Simulators (Servers)
      • Scripting: Client vs Simulator
      • Run local Simulators
      • World Simulators
      • Room Simulators
      • Advanced Simulator Authority
      • Simulator slugs
      • Build and Deploy
      • Command-line arguments
    • Client Connections
    • Optimization
      • Areas of Interest
      • Level of Detail (LOD)
      • Profiling
      • Simulation Frequency
    • Project Settings
    • Advanced topics
      • Big worlds
        • World Origin Shifting
        • Load balancing
      • Competitive games
        • Simulation Frame
        • Determinism, Prediction and Rollback
      • Team workflows
        • Version Control integration
        • Continuous Integration
      • Schema explained
        • Specification
        • Field settings
        • Archetypes
      • Code stripping
      • Replication Server CLI
      • Single-player gameplay
    • Scripting API
  • Hosting
    • Choosing where to host
    • coherence Cloud
      • Online Dashboard
      • Manage Worlds
      • Configure Rooms
      • Player Accounts
      • Game Services
        • Lobbies
        • Cloud Storage
        • Key-Value Store (Legacy)
      • APIs
        • Worlds
        • Rooms
        • Lobbies
        • Cloud Storage
        • Key-Value Store (Legacy)
    • Peer-to-peer
      • Implementing Client hosting
        • Steam Relay
        • Epic Online Services (EOS) Relay
        • Azure PlayFab Relay
  • Support
    • Release notes
    • Glossary
    • Unreal Engine support
    • WebGL support
    • ECS / DOTS support
    • Known issues
    • Upgrade guide
      • Upgrade 1.6 -> 1.7
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      • Upgrade 1.3 -> 1.4
      • Upgrade 1.2 -> 1.3
      • Upgrade 1.1 -> 1.2
      • Upgrade 1.0 -> 1.1
      • Upgrade 0.10 -> 1.0
      • Upgrade 0.9 -> 0.10
    • Credit cost & pricing
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  • Global simulator frequency
  • Per-binding sampling frequency

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  1. Manual
  2. Optimization

Simulation Frequency

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Without a special configuration, Entity data is captured at the highest possible frequency and sent to the Replication Server. This often generates more data than is needed to efficiently replicate the Entity's state across the network.

Global simulator frequency

On a Simulator, we can limit the framerate globally using Unity's built-in static variable targetFrameRate.

Application.targetFrameRate = 10;

coherence will automatically limit the target framerate of uploaded Simulators to 30 frames per second. We plan to make it possible to lift this restriction in the future. Check back for updates in the next couple of releases.

Per-binding sampling frequency

Replication frequency can be configured for each binding individually in the Prefab Optimize window. The Sample Rate controls how many times per second values are sampled and synced over the network.

Since the default packet send frequency of the Replication Server is 20Hz, sample rates above that value won't have any benefits unless you increase the Replication Server send frequency, too. See here how to .

High sample rates increase replication accuracy and reduce latency, but consume more bandwidth. The upper limit at which samples can be quantized is 60hz, so sample rates beyond that are generally not recommended. It is not possible to change sampling frequency at runtime.

Values that don't change over time do not consume any bandwidth. Only bindings with updated values will be synced over the network.

adjust the Replication Server send frequency
Use the Sample Rate to keep down bandwidth costs when scaling up.