diff --git a/FS25_ADSmartPickup/adBuildings.lua b/FS25_ADSmartPickup/adBuildings.lua
index c6c9298..3ba50c6 100644
--- a/FS25_ADSmartPickup/adBuildings.lua
+++ b/FS25_ADSmartPickup/adBuildings.lua
@@ -11,7 +11,7 @@ ADBuildings.MAX_MARKER_DISTANCE = 40
 -- en separat drop-markør (≠ bygningens læssemarkør) må højst stå så langt fra aflæsningstriggeren
 ADBuildings.MAX_DROP_DISTANCE = 25
 -- bygninger ændrer sig sjældent; genopbygningen (bygninger x markører) er dyr — 1 s gav et hak hvert sekund
-ADBuildings.CACHE_MS = 10000
+ADBuildings.CACHE_MS = 30000
 
 local cache = {list = nil, farmId = nil, time = -math.huge}
 
diff --git a/FS25_ADSmartPickup/adWaitPool.lua b/FS25_ADSmartPickup/adWaitPool.lua
index 7b94ad7..d5c764e 100644
--- a/FS25_ADSmartPickup/adWaitPool.lua
+++ b/FS25_ADSmartPickup/adWaitPool.lua
@@ -219,11 +219,39 @@ function ADWaitPool.hasRouteTo(adEnv, vehicle, wayPointId)
     return result
 end
 
+-- Rute mellem to markører: afhænger ikke af vognens position, så svaret gemmes længe (5 min). Profiler
+-- 26/9: "rutetjek frem+tilbage" tog 30-39 ms pr. kald og blev regnet igen hver gang vognen havde flyttet sig
+-- 10 m — det gav hak på 44-67 ms hvert minut.
+ADWaitPool.MARKER_ROUTE_MS = 300000
+local markerRoutes = {}
+function ADWaitPool.hasMarkerRoute(adEnv, fromWayPointId, toWayPointId)
+    local graph = adEnv.ADGraphManager
+    if graph.pathFromTo == nil then return true end
+    local key = tostring(fromWayPointId) .. ">" .. tostring(toWayPointId)
+    local now = clockMs()
+    local cached = markerRoutes[key]
+    if cached ~= nil and now ~= nil and now - cached.at < ADWaitPool.MARKER_ROUTE_MS then
+        return cached.result
+    end
+    local result = pathReaches(graph:pathFromTo(fromWayPointId, toWayPointId), toWayPointId)
+    if now ~= nil then markerRoutes[key] = {result = result, at = now + math.random() * ADWaitPool.MARKER_ROUTE_MS * 0.5} end
+    return result
+end
+
+function ADWaitPool.resetMarkerRoutes()
+    markerRoutes = {}
+end
+
 function ADWaitPool.hasRouteBothWays(adEnv, vehicle, toWayPointId, homeWayPointId)
     local graph = adEnv.ADGraphManager
     if graph.getPathTo == nil or graph.pathFromTo == nil then
         return true
     end
+    -- kendt hjem (kilden): vognen kører hjem -> mål -> hjem; markør til markør, gemt længe
+    if homeWayPointId ~= nil then
+        return ADWaitPool.hasMarkerRoute(adEnv, homeWayPointId, toWayPointId)
+            and ADWaitPool.hasMarkerRoute(adEnv, toWayPointId, homeWayPointId)
+    end
     local now = clockMs()
     local key = now ~= nil and routeKey(vehicle, tostring(toWayPointId) .. ">" .. tostring(homeWayPointId)) or nil
     local cached = key ~= nil and routeCache[key] or nil
diff --git a/FS25_ADSmartPickup/modDesc.xml b/FS25_ADSmartPickup/modDesc.xml
index 0ba4569..35ca31a 100644
--- a/FS25_ADSmartPickup/modDesc.xml
+++ b/FS25_ADSmartPickup/modDesc.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" standalone="no"?>
 <modDesc descVersion="107">
     <author>masterdraco</author>
-    <version>1.33.3.0</version>
+    <version>1.33.4.0</version>
     <title>
         <en>AD Smart Pickup</en>
     </title>
diff --git a/tests/test_adWaitPool.lua b/tests/test_adWaitPool.lua
index bb0e5a8..9ad70b4 100644
--- a/tests/test_adWaitPool.lua
+++ b/tests/test_adWaitPool.lua
@@ -137,5 +137,24 @@ do
     netGetTime = nil
 end
 
+-- MR: rute markør->markør gemmes (uafhængig af hvor vognen er) — hak 26/9: 30-39 ms pr. rutetjek
+do
+    local calls = 0
+    local realFromTo = adEnv.ADGraphManager.pathFromTo
+    adEnv.ADGraphManager.pathFromTo = function(self, from, to) calls = calls + 1; return realFromTo(self, from, to) end
+    local savedClock = netGetTime
+    local t = 1000
+    netGetTime = function() return t end
+    ADWaitPool.resetMarkerRoutes()
+    local far = {name = "far", rootNode = {x = 5000, z = 5000}}
+    check("MR første: rute", ADWaitPool.hasRouteBothWays(adEnv, v2, 10, 30), true)
+    local afterFirst = calls
+    t = t + 60000
+    check("MR anden fra en helt anden position: samme svar", ADWaitPool.hasRouteBothWays(adEnv, far, 10, 30), true)
+    check("MR anden gang ingen ny ruteberegning", calls, afterFirst)
+    adEnv.ADGraphManager.pathFromTo = realFromTo
+    netGetTime = savedClock
+end
+
 print(failures == 0 and "\nALLE TESTS OK" or ("\n" .. failures .. " FEJL"))
 os.exit(failures == 0 and 0 or 1)