- the eight heaviest UI feeds — spellbook, party, character, bags, talents, units, pet, player — rebuild only when an input moved instead of every frame: 216 → 12 µs a frame parked
- the character window's cost settles once it closes: enchant countdowns feed by the second instead of firing an inventory event into all 20 slots every frame, the paper-doll booth parks with its camera, and a window hidden under the cursor fires OnLeave so its tooltip goes with it — the reference's hover-hide law
- the walk stops paying for finished work: the loading-screen tally's per-placement walk latches off once the world is ready, the settled placement spawner is one integer compare, and billboards stop dirtying every card's transform
- never-rendering hierarchy nodes — rig anchors, joints, doodad hosts — keep the hide chain but leave the per-camera visibility sweep: 25,198 → 18,026 swept entities at Goldshire
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
