Unreal Engine Tool: Level Optimise

JRow · September 4, 2025, 11:00pm

I made a tool which can help you Quickly identify bugs and optimisation opportunities in your UE5 levels!

You can check it out on the FAB marketplace HERE

A LEVEL-FOCUSED TOOL - search your level actors for:

47 Different Types Of Optimisations

46 Different Types Of Bugs

Here are a few of the key performance issues this tool can help you identify, allowing you to claw back FPS:

Lights with no Max Draw Distance set
Lights with Cast Shadows enabled
Static meshes with Nanite disabled
Skeletal meshes with no LODs

… and many more!

It’s easy for small bugs and little mis-optimisations to make their way into your levels, building up over time. They accumulate into something much bigger, negatively impacting a player’s perception of your game almost as much as a single, larger bug could. I like to think of the analogy of:

Death by 1000 cuts, or in our case preventing Death by 1000 bugs

Manually checking every actor in your level for issues is time-consuming, tedious and so unrealistic. It becomes like searching for needles in a haystack. This Level Optimise tool is:

Designed to help you quickly find those needles (issues) in the haystack (level)

NOTE: The tool doesn’t make changes to your level or project; it only reads your assets to generate logs of potential issues that you could look into.
I thought this was important because every project is unique and highly contextual. What’s correct for one level may not apply to another. For instance, deciding which lights should have cast shadows enabled / disabled to help balance visual fidelity and performance.

Guides:

Documentation can be found HERE

Video Guides:

Functionality Breakdown

Helpers:

Quick access to frequently used view modes, tools and commands

Health Checks:

Run health check overviews on your level by actor type e.g. static mesh, lights, etc

Optimisation Searches:

Static Meshes

No LODs
Nanite Disabled, No LODs
Edited Lighting Channels
Mobility Mode
Nanite Enabled / Disabled
Simulate Physics Enabled / Disabled
Custom Depth Pass Enabled / Disabled
Overridden Light Map Resolution
Using Shadow 2 Sided
Same Material In Multiple Slots
Vertex Colours Added In Level

Skeletal Meshes

No LODs
No Max Draw Distance Set
Edited Lighting Channels
Cast Shadows Enabled / Disabled
Custom Depth Pass Enabled / Disabled
Same Material In Multiple Slots

Audio

Auto Activate Enabled
Audio Volume Priority Of X

VFX

Auto Activate Enabled
No Max Draw Distance
Cast Shadow Enabled / Disabled

Foliage

Missing LODs
No Max Cull Distance
Edited Lighting Channels
Mobility Mode
Cast Shadows Enabled / Disabled
Nanite Enabled / Disabled
Two-Sided Shadows Enabled / Disabled
Same Material In Multiple Slots
Overridden Light Map Resolution

Decal

Low Fade ‘Screen Size’ Value
Text Render
- Cast Shadow Enabled

Lights

No Max Draw Distance
Edited Lighting Channels
Cast Shadows Enabled / Disabled
Mobility Mode
Has Lighting Function Material
Has IES Texture Applied

Volumes

Mobility Mode
Volume Priority

Blueprints

List All Blueprints
Replicates Enabled / Disabled
Default Net Update Frequency
Default Net Cull Distance Squared

Misc

Actors with Tags Applied
Has Specific Tag

Bug Searches: