diff --git a/src/main/scala/net/psforever/actors/session/support/SessionAvatarHandlers.scala b/src/main/scala/net/psforever/actors/session/support/SessionAvatarHandlers.scala
index 7e8b366e..0f83c48b 100644
--- a/src/main/scala/net/psforever/actors/session/support/SessionAvatarHandlers.scala
+++ b/src/main/scala/net/psforever/actors/session/support/SessionAvatarHandlers.scala
@@ -94,7 +94,7 @@ class SessionAvatarHandlers(
           lazy val targetDelay = {
             val populationOver = math.max(
               0,
-              continent.blockMap.sector(ourPosition, range=drawConfig.rangeMax.toFloat).livePlayerList.size - drawConfig.populationThreshold
+              sessionData.localSector.livePlayerList.size - drawConfig.populationThreshold
             )
             val distanceAdjustment = math.pow(populationOver / drawConfig.populationStep * drawConfig.rangeStep, 2) //sq.m
             val adjustedDistance = currentDistance + distanceAdjustment //sq.m
diff --git a/src/main/scala/net/psforever/actors/session/support/SessionData.scala b/src/main/scala/net/psforever/actors/session/support/SessionData.scala
index 196bb8a1..2aa1feb4 100644
--- a/src/main/scala/net/psforever/actors/session/support/SessionData.scala
+++ b/src/main/scala/net/psforever/actors/session/support/SessionData.scala
@@ -4,6 +4,7 @@ package net.psforever.actors.session.support
 import akka.actor.typed.scaladsl.adapter._
 import akka.actor.{ActorContext, ActorRef, Cancellable, typed}
 import net.psforever.objects.sourcing.{PlayerSource, SourceEntry}
+import net.psforever.objects.zones.blockmap.{SectorGroup, SectorPopulation}
 
 import scala.collection.mutable
 import scala.concurrent.ExecutionContext.Implicits.global
@@ -137,6 +138,12 @@ class SessionData(
   def squad: SessionSquadHandlers = squadResponseOpt.orNull
   def zoning: ZoningOperations = zoningOpt.orNull
 
+  /**
+   * updated when an upstream packet arrives;
+   * allow to be a little stale for a short while
+   */
+  private[support] var localSector: SectorPopulation = SectorGroup(Nil)
+
   def session: Session = theSession
 
   def session_=(session: Session): Unit = {
@@ -206,7 +213,7 @@ class SessionData(
     )= pkt
     persist()
     turnCounterFunc(avatarGuid)
-    updateBlockMap(player, continent, pos)
+    updateBlockMap(player, pos)
     val isMoving     = WorldEntity.isMoving(vel)
     val isMovingPlus = isMoving || isJumping || jumpThrust
     if (isMovingPlus) {
@@ -2665,16 +2672,22 @@ class SessionData(
     middlewareActor ! MiddlewareActor.Teardown()
   }
 
-  def updateBlockMap(target: BlockMapEntity, zone: Zone, newCoords: Vector3): Unit = {
+  def updateBlockMap(target: BlockMapEntity, newCoords: Vector3): Unit = {
     target.blockMapEntry.foreach { entry =>
-      if (BlockMap.findSectorIndices(continent.blockMap, newCoords, entry.rangeX, entry.rangeY).toSet.equals(entry.sectors)) {
+      val sectorIndices = BlockMap.findSectorIndices(continent.blockMap, newCoords, entry.rangeX, entry.rangeY).toSet
+      if (sectorIndices.equals(entry.sectors)) {
         target.updateBlockMapEntry(newCoords) //soft update
+        localSector = continent.blockMap.sector(sectorIndices, Config.app.game.playerDraw.rangeMax.toFloat)
       } else {
-        zone.actor ! ZoneActor.UpdateBlockMap(target, newCoords) //hard update
+        continent.actor ! ZoneActor.UpdateBlockMap(target, newCoords) //hard update
       }
     }
   }
 
+  def updateLocalBlockMap(pos: Vector3): Unit = {
+    localSector = continent.blockMap.sector(pos, Config.app.game.playerDraw.rangeMax.toFloat)
+  }
+
   private[support] var oldRefsMap: mutable.HashMap[PlanetSideGUID, String] = new mutable.HashMap[PlanetSideGUID, String]()
   def updateOldRefsMap(): Unit = {
     if(player.HasGUID) {
diff --git a/src/main/scala/net/psforever/actors/session/support/SessionVehicleHandlers.scala b/src/main/scala/net/psforever/actors/session/support/SessionVehicleHandlers.scala
index 55d2d428..915390ee 100644
--- a/src/main/scala/net/psforever/actors/session/support/SessionVehicleHandlers.scala
+++ b/src/main/scala/net/psforever/actors/session/support/SessionVehicleHandlers.scala
@@ -55,6 +55,7 @@ class SessionVehicleHandlers(
         player.Position = pos
         player.Orientation = orient
         player.Velocity = vel
+        sessionData.updateLocalBlockMap(pos)
 
       case VehicleResponse.VehicleState(
       vehicleGuid,
diff --git a/src/main/scala/net/psforever/actors/session/support/VehicleOperations.scala b/src/main/scala/net/psforever/actors/session/support/VehicleOperations.scala
index 47ef7469..a3a91f61 100644
--- a/src/main/scala/net/psforever/actors/session/support/VehicleOperations.scala
+++ b/src/main/scala/net/psforever/actors/session/support/VehicleOperations.scala
@@ -44,7 +44,7 @@ class VehicleOperations(
         sessionData.turnCounterFunc(player.GUID)
         sessionData.fallHeightTracker(pos.z)
         if (obj.MountedIn.isEmpty) {
-          sessionData.updateBlockMap(obj, continent, pos)
+          sessionData.updateBlockMap(obj, pos)
         }
         player.Position = pos //convenient
         if (obj.WeaponControlledFromSeat(0).isEmpty) {
@@ -127,7 +127,7 @@ class VehicleOperations(
         sessionData.turnCounterFunc(player.GUID)
         val (position, angle, velocity, notMountedState) = continent.GUID(obj.MountedIn) match {
           case Some(v: Vehicle) =>
-            sessionData.updateBlockMap(obj, continent, pos)
+            sessionData.updateBlockMap(obj, pos)
             (pos, v.Orientation - Vector3.z(value = 90f) * Vehicles.CargoOrientation(obj).toFloat, v.Velocity, false)
           case _ =>
             (pos, ang, vel, true)
@@ -243,7 +243,7 @@ class VehicleOperations(
         obj.Position = pos
         obj.Orientation = ang
         obj.Velocity = vel
-        sessionData.updateBlockMap(obj, continent, pos)
+        sessionData.updateBlockMap(obj, pos)
         obj.zoneInteractions()
         continent.VehicleEvents ! VehicleServiceMessage(
           continent.id,
diff --git a/src/main/scala/net/psforever/objects/zones/blockmap/BlockMap.scala b/src/main/scala/net/psforever/objects/zones/blockmap/BlockMap.scala
index b6c91ec9..a35d3f1c 100644
--- a/src/main/scala/net/psforever/objects/zones/blockmap/BlockMap.scala
+++ b/src/main/scala/net/psforever/objects/zones/blockmap/BlockMap.scala
@@ -74,13 +74,25 @@ class BlockMap(fullMapWidth: Int, fullMapHeight: Int, desiredSpanSize: Int) {
     * find the sector conglomerate to which this range allocates.
     * @see `BlockMap.findSectorIndices`
     * @see `BlockMap.quickToSectorGroup`
+    * @see `BlockMap::sector(Iterable[Int], Float)`
     * @param p the game world coordinates
     * @param range the axis distance from the provided coordinates
     * @return a conglomerate sector which lists all of the entities in the discovered sector(s)
     */
   def sector(p: Vector3, range: Float): SectorPopulation = {
-    val indices = BlockMap.findSectorIndices(blockMap = this, p, range)
+    sector(BlockMap.findSectorIndices(blockMap = this, p, range), range)
+  }
 
+  /**
+   * Given a coordinate position within representable space and a range from that representable space,
+   * find the sector conglomerate to which this range allocates.
+   * @see `BlockMap.findSectorIndices`
+   * @see `BlockMap.quickToSectorGroup`
+   * @param indices an enumeration that directly associates with the structure of the block map
+   * @param range the axis distance from the provided coordinates
+   * @return a conglomerate sector which lists all of the entities in the discovered sector(s)
+   */
+  def sector(indices: Iterable[Int], range: Float): SectorPopulation = {
     if (indices.max < blocks.size) {
       BlockMap.quickToSectorGroup(range, BlockMap.sectorsOnlyWithinBlockStructure(indices, blocks) )
     } else {