Performance optimization checklist for Blueprints

1. TICK MANAGEMENT: - Disable tick on static actors (SetActorTickEnabled=false). - Use SetActorTickInterval(0.1-0.5) for AI, non-critical systems. - Prefer event-driven over tick polling where possible. 2. AVOID EVERY-TICK EXPENSIVE CALLS: - GetAllActorsOfClass: cache in BeginPlay, refresh only when needed. - CastTo: cache result in variable after first cast. - GetComponentByClass: call once and store reference. 3. VISIBILITY: - SetActorHiddenInGame + SetActorTickEnabled=false for off-screen actors. - Use LOD (Level of Detail) on meshes. 4. SPAWNING: - Use object pooling for frequently spawned/destroyed actors (bullets, effects). 5. EVENTS OVER POLLING: - Use overlap events instead of periodic distance checks. - Use delegates/dispatchers instead of checking conditions each frame.

FInterpTo_Constant — constant-speed interpolation toward target

Moves at constant speed unlike FInterpTo which decelerates.

FInterpTo — smooth interpolation toward target value over time

Frame-rate independent smoothing. Higher InterpSpeed = faster approach. Use every tick with DeltaSeconds.

SetGlobalTimeDilation — slow down or speed up the entire game

1.0=normal, 0.5=half speed, 0.0=pause. Affects physics, animations, timers.

SetGlobalTimeDilation — speed up or slow down game time

UGameplayStatics. 1.0=normal, 0.5=half speed, 2.0=double speed. Minimum 0.0001.

CreateDynamicMaterialInstance — create runtime modifiable material

UPrimitiveComponent method. Store result in variable and reuse. Create once in BeginPlay.

MultiGate — distribute execution across multiple outputs

FInterpTo — smoothly interpolate a float toward target each frame

Use with EventTick. DeltaTime from Tick, InterpSpeed controls how fast (e.g. 5.0).

DoN — execute N times then stop

EnhancedInputAction — Enhanced Input system action event

K2Node_EnhancedInputAction. ActionValue type depends on InputAction (Bool, Float, Axis2D, Axis3D). Triggers: Started, Ongoing, Triggered, Completed, Canceled.