diff --git a/selfdrive/ui/sunnypilot/qt/onroad/hud.cc b/selfdrive/ui/sunnypilot/qt/onroad/hud.cc
index fa57e2b334..d8176051fb 100644
--- a/selfdrive/ui/sunnypilot/qt/onroad/hud.cc
+++ b/selfdrive/ui/sunnypilot/qt/onroad/hud.cc
@@ -26,31 +26,54 @@ HudRendererSP::HudRendererSP() {
 void HudRendererSP::updateState(const UIState &s) {
   HudRenderer::updateState(s);
 
+  float speedConv = is_metric ? MS_TO_KPH : MS_TO_MPH;
+  devUiInfo = s.scene.dev_ui_info;
+  roadName = s.scene.road_name;
+  showTurnSignals = s.scene.turn_signals;
+  speedLimitMode = static_cast<SpeedLimitMode>(s.scene.speed_limit_mode);
+  speedUnit = is_metric ? tr("km/h") : tr("mph");
+  standstillTimer = s.scene.standstill_timer;
+
   const SubMaster &sm = *(s.sm);
   const auto cs = sm["controlsState"].getControlsState();
   const auto car_state = sm["carState"].getCarState();
   const auto car_control = sm["carControl"].getCarControl();
   const auto radar_state = sm["radarState"].getRadarState();
   const auto is_gps_location_external = sm.rcv_frame("gpsLocationExternal") > 1;
-  const auto gpsLocation = is_gps_location_external ? sm["gpsLocationExternal"].getGpsLocationExternal() : sm["gpsLocation"].getGpsLocation();
+  const char *gps_source = is_gps_location_external ? "gpsLocationExternal" : "gpsLocation";
+  const auto gpsLocation = is_gps_location_external ? sm[gps_source].getGpsLocationExternal() : sm[gps_source].getGpsLocation();
   const auto ltp = sm["liveTorqueParameters"].getLiveTorqueParameters();
   const auto car_params = sm["carParams"].getCarParams();
   const auto car_params_sp = sm["carParamsSP"].getCarParamsSP();
   const auto lp_sp = sm["longitudinalPlanSP"].getLongitudinalPlanSP();
   const auto lmd = sm["liveMapDataSP"].getLiveMapDataSP();
 
-  float speedConv = is_metric ? MS_TO_KPH : MS_TO_MPH;
-  speedLimit = lp_sp.getSpeedLimit().getResolver().getSpeedLimit() * speedConv;
-  speedLimitLast = lp_sp.getSpeedLimit().getResolver().getSpeedLimitLast() * speedConv;
-  speedLimitOffset = lp_sp.getSpeedLimit().getResolver().getSpeedLimitOffset() * speedConv;
-  speedLimitValid = lp_sp.getSpeedLimit().getResolver().getSpeedLimitValid();
-  speedLimitLastValid = lp_sp.getSpeedLimit().getResolver().getSpeedLimitLastValid();
-  speedLimitFinalLast = lp_sp.getSpeedLimit().getResolver().getSpeedLimitFinalLast() * speedConv;
-  speedLimitSource = lp_sp.getSpeedLimit().getResolver().getSource();
-  speedLimitMode = static_cast<SpeedLimitMode>(s.scene.speed_limit_mode);
-  speedLimitAssistState = lp_sp.getSpeedLimit().getAssist().getState();
-  speedLimitAssistActive = lp_sp.getSpeedLimit().getAssist().getActive();
-  roadName = s.scene.road_name;
+  if (sm.updated("carParams")) {
+    steerControlType = car_params.getSteerControlType();
+  }
+
+  if (sm.updated("carParamsSP")) {
+    pcmCruiseSpeed = car_params_sp.getPcmCruiseSpeed();
+  }
+
+  if (sm.updated("longitudinalPlanSP")) {
+    speedLimit = lp_sp.getSpeedLimit().getResolver().getSpeedLimit() * speedConv;
+    speedLimitLast = lp_sp.getSpeedLimit().getResolver().getSpeedLimitLast() * speedConv;
+    speedLimitOffset = lp_sp.getSpeedLimit().getResolver().getSpeedLimitOffset() * speedConv;
+    speedLimitValid = lp_sp.getSpeedLimit().getResolver().getSpeedLimitValid();
+    speedLimitLastValid = lp_sp.getSpeedLimit().getResolver().getSpeedLimitLastValid();
+    speedLimitFinalLast = lp_sp.getSpeedLimit().getResolver().getSpeedLimitFinalLast() * speedConv;
+    speedLimitSource = lp_sp.getSpeedLimit().getResolver().getSource();
+    speedLimitAssistState = lp_sp.getSpeedLimit().getAssist().getState();
+    speedLimitAssistActive = lp_sp.getSpeedLimit().getAssist().getActive();
+    smartCruiseControlVisionEnabled = lp_sp.getSmartCruiseControl().getVision().getEnabled();
+    smartCruiseControlVisionActive = lp_sp.getSmartCruiseControl().getVision().getActive();
+    smartCruiseControlMapEnabled = lp_sp.getSmartCruiseControl().getMap().getEnabled();
+    smartCruiseControlMapActive = lp_sp.getSmartCruiseControl().getMap().getActive();
+    greenLightAlert = lp_sp.getE2eAlerts().getGreenLightAlert();
+    leadDepartAlert = lp_sp.getE2eAlerts().getLeadDepartAlert();
+  }
+
   if (sm.updated("liveMapDataSP")) {
     roadNameStr = QString::fromStdString(lmd.getRoadName());
     speedLimitAheadValid = lmd.getSpeedLimitAheadValid();
@@ -66,7 +89,7 @@ void HudRendererSP::updateState(const UIState &s) {
 
   static int reverse_delay = 0;
   bool reverse_allowed = false;
-  if (int(car_state.getGearShifter()) != 4) {
+  if (car_state.getGearShifter() != cereal::CarState::GearShifter::REVERSE) {
     reverse_delay = 0;
     reverse_allowed = false;
   } else {
@@ -78,46 +101,47 @@ void HudRendererSP::updateState(const UIState &s) {
 
   reversing = reverse_allowed;
 
+  if (sm.updated("liveParameters")) {
+    roll = sm["liveParameters"].getLiveParameters().getRoll();
+  }
+
+  if (sm.updated("deviceState")) {
+    memoryUsagePercent = sm["deviceState"].getDeviceState().getMemoryUsagePercent();
+  }
+
+  if (sm.updated(gps_source)) {
+    gpsAccuracy = is_gps_location_external ? gpsLocation.getHorizontalAccuracy() : 1.0;  // External reports accuracy, internal does not.
+    altitude = gpsLocation.getAltitude();
+    bearingAccuracyDeg = gpsLocation.getBearingAccuracyDeg();
+    bearingDeg = gpsLocation.getBearingDeg();
+  }
+
+  if (sm.updated("liveTorqueParameters")) {
+    torquedUseParams = ltp.getUseParams();
+    latAccelFactorFiltered = ltp.getLatAccelFactorFiltered();
+    frictionCoefficientFiltered = ltp.getFrictionCoefficientFiltered();
+    liveValid = ltp.getLiveValid();
+  }
+
   latActive = car_control.getLatActive();
+  actuators = car_control.getActuators();
+  longOverride = car_control.getCruiseControl().getOverride();
+  carControlEnabled = car_control.getEnabled();
+
   steerOverride = car_state.getSteeringPressed();
-
-  devUiInfo = s.scene.dev_ui_info;
-
-  speedUnit = is_metric ? tr("km/h") : tr("mph");
   lead_d_rel = radar_state.getLeadOne().getDRel();
   lead_v_rel = radar_state.getLeadOne().getVRel();
   lead_status = radar_state.getLeadOne().getStatus();
-  steerControlType = car_params.getSteerControlType();
-  actuators = car_control.getActuators();
   torqueLateral = steerControlType == cereal::CarParams::SteerControlType::TORQUE;
   angleSteers = car_state.getSteeringAngleDeg();
   desiredCurvature = cs.getDesiredCurvature();
   curvature = cs.getCurvature();
-  roll = sm["liveParameters"].getLiveParameters().getRoll();
-  memoryUsagePercent = sm["deviceState"].getDeviceState().getMemoryUsagePercent();
-  gpsAccuracy = is_gps_location_external ? gpsLocation.getHorizontalAccuracy() : 1.0;  // External reports accuracy, internal does not.
-  altitude = gpsLocation.getAltitude();
   vEgo = car_state.getVEgo();
   aEgo = car_state.getAEgo();
   steeringTorqueEps = car_state.getSteeringTorqueEps();
-  bearingAccuracyDeg = gpsLocation.getBearingAccuracyDeg();
-  bearingDeg = gpsLocation.getBearingDeg();
-  torquedUseParams = ltp.getUseParams();
-  latAccelFactorFiltered = ltp.getLatAccelFactorFiltered();
-  frictionCoefficientFiltered = ltp.getFrictionCoefficientFiltered();
-  liveValid = ltp.getLiveValid();
 
-  standstillTimer = s.scene.standstill_timer;
   isStandstill = car_state.getStandstill();
   if (not s.scene.started) standstillElapsedTime = 0.0;
-  longOverride = car_control.getCruiseControl().getOverride();
-  smartCruiseControlVisionEnabled = lp_sp.getSmartCruiseControl().getVision().getEnabled();
-  smartCruiseControlVisionActive = lp_sp.getSmartCruiseControl().getVision().getActive();
-  smartCruiseControlMapEnabled = lp_sp.getSmartCruiseControl().getMap().getEnabled();
-  smartCruiseControlMapActive = lp_sp.getSmartCruiseControl().getMap().getActive();
-
-  greenLightAlert = lp_sp.getE2eAlerts().getGreenLightAlert();
-  leadDepartAlert = lp_sp.getE2eAlerts().getLeadDepartAlert();
 
   // override stock current speed values
   float v_ego = (v_ego_cluster_seen && !s.scene.trueVEgoUI) ? car_state.getVEgoCluster() : car_state.getVEgo();
@@ -128,11 +152,8 @@ void HudRendererSP::updateState(const UIState &s) {
   rightBlinkerOn = car_state.getRightBlinker();
   leftBlindspot = car_state.getLeftBlindspot();
   rightBlindspot = car_state.getRightBlindspot();
-  showTurnSignals = s.scene.turn_signals;
 
-  carControlEnabled = car_control.getEnabled();
   speedCluster = car_state.getCruiseState().getSpeedCluster() * speedConv;
-  pcmCruiseSpeed = car_params_sp.getPcmCruiseSpeed();
 }
 
 void HudRendererSP::draw(QPainter &p, const QRect &surface_rect) {
diff --git a/selfdrive/ui/sunnypilot/qt/onroad/hud.h b/selfdrive/ui/sunnypilot/qt/onroad/hud.h
index f9135ee9ef..a32fdb28a7 100644
--- a/selfdrive/ui/sunnypilot/qt/onroad/hud.h
+++ b/selfdrive/ui/sunnypilot/qt/onroad/hud.h
@@ -121,5 +121,5 @@ private:
   bool carControlEnabled;
   float speedCluster = 0;
   int icbm_active_counter = 0;
-  bool pcmCruiseSpeed;
+  bool pcmCruiseSpeed = true;
 };