Roblox performance optimization
Skill AshExplained/roblox-skills/roblox-performance-optimization
Analyze and optimize Roblox scene and script performance. Use for mobile frame rate, memory, instance count, rendering cost, physics, particles, lighting, asset budgets, streaming, leaks, and using the rbx-scene-analysis workflow.From its SKILL.md
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SKILL.md
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Roblox Performance Optimization
Goal
Keep the experience smooth on lower-end phones. Favor measurable fixes over visual guesses.
Use The Scene Analysis Skill
When available, invoke rbx-scene-analysis before deep performance work. Use it to inspect rendering, memory, instance composition, unparented instances, and animation or audio asset usage.
MCP Workflow
- Confirm Studio state with
get_studio_state. - Use
search_game_treeandinspect_instanceto identify heavy hierarchies. - Use
execute_luaufor targeted counts, tag scans, memory snapshots, or property audits. - Use
screen_captureto preserve before/after visuals. - Playtest with
start_stop_playand checkget_console_output.
Optimization Targets
- Instance count and deeply nested hierarchies.
- Unanchored parts causing physics cost.
- Excessive constraints, touched events, or per-frame loops.
- Large textures, too many unique materials, and high-poly meshes.
- Particle emitters with high rate/lifetime combinations.
- Dynamic lights, shadows, post-processing, and expensive transparency.
- Scripts that connect events repeatedly or leave stale connections.
- Workspace content that should stream or load later.
Mobile Budget Habits
- Build the first area to be visually strong but technically cheap.
- Prefer fewer meaningful effects over many constant effects.
- Use Level of Detail thinking for distant props.
- Keep UI lightweight and avoid per-frame layout work.
- Test phones and tablet-like viewport sizes, not only desktop Studio.
Report Format
Return:
- Biggest performance risks.
- Evidence from scene analysis, instance inspection, console output, or captures.
- Fixes ranked by likely player impact.
- Verification steps and any tradeoffs.
Next
Confirm the gains on-device with roblox-mobile-playtest, and re-run roblox-playtest-qa to make sure nothing regressed.
What ships with it
Read from the repository
Just SKILL.md. No reference files, no scripts.
Gives 0 of the 12 instructions most research analysis skills give in 398 tokens
Counted across 1,063 of the 1,754 authors here whose files we hold, read 2026-08-07
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Said here and by no other author read
- invoke rbx-scene-analysis before deep performance work
- confirm studio state with get_studio_state
- identify heavy hierarchies using search_game_tree and inspect_instance
- use execute_luau for targeted counts and audits
- preserve before and after visuals with screen_capture
- playtest with start_stop_play and check get_console_output
Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.