roblox-performance
Skill150 starsChanged 51 days agoMITView on GitHub
Use when profiling or fixing Roblox performance: low FPS, lag, memory, network load, slow phones, hot paths.
3 other projects use a version of this, 1 of them edited.
Adopted by
Most recently taken up by
- EL4CTEO/roblox-skillstheir own version, first seen Sep 28, 2026
- szlay/roblox-baseedited, first seen Jul 24, 2026
- sentinelcore/roblox-skillstheir own version, first seen Feb 23, 2026
Other versions3 projects use a version of this.
Word for word · 0
None found.
Edited · 1
- szlay/roblox-base★ 118% same
Wrote their own version · 2
- EL4CTEO/roblox-skills★ 92same name
- sentinelcore/roblox-skills★ 18same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository29 other files it gives its agents.
- AGENTS.mdAGENTS.md
- roblox-architectureSkill
- roblox-collaboration-modeSkill
- roblox-dataSkill
- roblox-luau-coreSkill
- roblox-luau-patternsSkill
- roblox-luau-typesSkill
- roblox-networkingSkill
- roblox-securitySkill
- roblox-server-dataSkill
- roblox-analyticsSkill
- roblox-game-designSkill
- roblox-growth-designSkill
- roblox-monetizationSkill
- roblox-player-psychologySkill
- roblox-animation-vfxSkill
- roblox-audioSkill
- roblox-buildingSkill
- roblox-cameraSkill
- roblox-guiSkill
- roblox-inputSkill
- roblox-lightingSkill
- roblox-localizationSkill
- roblox-npc-aiSkill
- roblox-physicsSkill
- roblox-cloudSkill
- roblox-publish-checklistSkill
- roblox-studio-mcpSkill
- roblox-toolingSkill
The file
We split this skill into the rules it gives an agent
3 rules. 0 are common, 1 is distinctive, and 2 are very specific to this project.
0
Common
Most of the 3 edited versions we read keep these.
1
Distinctive
This author's own choices. Worth a look.
2
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 21
Use for profiling and performance budgets.
- Distinctive: line 42
Use Actors only after profiling identifies isolatable CPU work.
- Very specific: line 44
Do not rely on shared module state across Actors.
“Common” is measured: kept by at least 6 in 10 of the 3 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
Roblox Performance
When to Load
Use for profiling and performance budgets. Pooling and lifecycle patterns: roblox-luau-patterns.
Quick Reference
Profiling Tools
- MicroProfiler (Ctrl+F6): Frame breakdown of scripts, physics, rendering.
- Developer Console (F9): Memory, network, rendering, and server stats.
- Script Profiler (Ctrl+Alt+F5): Per-script CPU and heap.
- Labels:
debug.profilebegin/debug.profileendmark regions;debug.setmemorycategorylabels memory. Gate instrumentation behind a flag.
Performance Targets
| Metric | Starting target | Investigate at |
| Server heartbeat | < 16ms | > 33ms |
| Client FPS (desktop) | 60 | < 30 |
| Client FPS (mobile) | 45 | < 30 |
| Memory | device-specific | sustained growth |
Optimize measured hot paths, not folklore. Throttle from measurements; re-profile after shipping.
Parallel Luau
- Use Actors only after profiling identifies isolatable CPU work.
- Workers compute; synchronize before restricted DataModel writes.
- Do not rely on shared module state across Actors.
SendMessagecopies data; SharedTable supports shared state and atomic updates.
Hot-loop cost model
- Luau optimizes global imports; avoid folklore function hoisting/unrolling. Environment impurity can disable optimizations. Profile allocations as well as CPU; GC cost may occur later.
Object Pooling
Pre-clone and reuse. Canonical pool code (token-lease ownership): roblox-luau-patterns.
StreamingEnabled Essentials
- On by default. Container-scoped: only Workspace descendants stream.
ModelStreamingBehavior = Improvedstreams non-BasePart descendants with their parent Model; Legacy streams only BaseParts. - Streamed-out = parented to nil, not destroyed. Luau refs persist if it streams back.
- Config (Studio): target defaults 1024, min 64; set
StreamingIntegrityMode; tune from data. - Gotcha:
FindFirstChild("DistantPart")returns nil if streamed out. Use WaitForChild with timeout.
Mobile
- Profile geometry, textures, particles, UI, shadows on low-end devices.
Full reference with code examples and API tables: references/full.md
Does it work?
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Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
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Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.