RobUI – Performance Optimization Update

Major CPU Usage Reduction

This update focused entirely on performance optimization and internal engine cleanup.

ActionBars Module – Complete Performance Refactor

The ActionBars system was identified as the primary CPU consumer.

Changes:

• Removed skinning from ActionBarActionButtonMixin:Update hook

• Eliminated constant reskinning on button state updates

• Removed continuous polling OnUpdate loop

• Replaced with coalesced, event-driven apply system

• Added skin versioning (buttons only reskin when style actually changes)

• Implemented keybinding cache (removed repeated GetBindingKey() calls)

• Added safe deferred apply system (no tooltip or combat interference)

Result:
CPU usage reduced from ~8% to ~1%
Approximate reduction: 87.5%

Auras Module – Heavy Optimization Pass

The Auras system was reworked to prevent redundant updates and unnecessary API calls.

Changes:

• Removed repeated cooldown styling inside update loop

• Added cooldown instance caching to prevent repeated GetAuraDuration() calls

• Implemented UNIT_AURA coalescing with per-unit throttle

• Added per-unit revision hash system

  • Aura lists are hashed using auraInstanceID

  • If no change is detected, UpdateHolder and Collect are completely skipped

• Reduced redundant SnapshotUnitAuras calls

• Improved event scheduling logic to avoid update spam

Result:
Significant reduction in:

• UNIT_AURA overhead

• Collect loop frequency

• Cooldown object calls

• Unnecessary holder rebuilds

The Auras system now updates only when actual aura state changes.

Stability Improvements

• Removed unsafe MoneyFrame override that caused secret value crashes

• Improved combat and tooltip safety checks

• Reduced redundant texture, backdrop, and font operations

• Eliminated unnecessary repeated layout operations

Overall Impact

RobUI now runs significantly lighter during:

• Combat

• Heavy aura activity

• Action bar updates

• Binding changes

This update focused purely on performance and engine stabilization.
No new features were added.