Game Performance Best Practices
Holistic performance guide covering rendering, physics, networking, and script efficiency for Roblox games.
Introduction
Game performance is a system-wide concern. Scripts, rendering, physics, and network replication all contribute to frame time. This hub provides a holistic checklist for diagnosing and fixing performance issues in published Roblox experiences.
Rendering Performance
Reduce part count with MeshParts and unions. Use StreamingEnabled for large maps. Limit particle emitters and transparent parts. Level of detail (LOD) for distant objects. Profile with Render summary in Developer Console.
Network Optimization
Minimize RemoteEvent frequency. Compress data payloads. Use UnreliableRemoteEvents for non-critical updates. Set network ownership appropriately for physics objects. Replicate only what clients need to see.
Use Cases
- Published game optimization
- Mobile performance tuning
- Pre-launch performance audits
Best Practices
- Test on low-end mobile devices
- Monitor memory with Developer Console
- Set performance budgets per system
Troubleshooting
Script runs but nothing happens in-game
Verify the script type matches its location. Server Scripts belong in ServerScriptService; LocalScripts in StarterPlayerScripts or StarterGui. Check the Output window in Studio for error messages.
Changes don't appear after editing
Stop and restart Play mode in Studio. Some scripts cache values on first run. For published games, republish after testing locally.