F1 — Toggle cache (starpilot_annotated_camera.h + .cc): Added 25 typed cached members; all 32 starpilot_toggles.value() calls in paint code replaced with the cached versions. All reads happen once at the top of updateState() per frame. The only surviving raw call is in mousePressEvent (intentional — touch is rare, not paint-path).
F2 — HUD gradient hoist (selfdrive/ui/qt/onroad/hud.cc): Header gradient is now a static const built once via lambda, no allocation per frame.
Build, flash, and verify that toggling compass, simple_mode, radar_tracks etc. from settings still take effect live without a restart.
D2 — update() in starpilot_onroad.cc now only fires when at least one overlay (showBlindspot, showSignal, showSteering, showFPS) is active. ~30–60 wasted repaints/sec eliminated when all overlays are off.
E4 — Holiday theme check reordered so current_holiday_theme != "stock" (cheapest) is first. Default is stock, so the rest of the chain never evaluates on a normal non-holiday drive.
E7 — paintSteeringTorqueBorder no longer rebuilds the QLinearGradient and computes lighter(120)/setAlpha/5 setColorAt calls every frame. The gradient is now built once in resizeEvent and reused. The per-frame work is now just the two geometry calculations and fillRect.
E5/E6/E8 — Audited clean: all remaining params_memory.put calls are event-driven (button presses, random events), no hot-path logging exists in the UI code, and all QTimers are event-driven or single-shot offroad dialogs.
firestar5683