diff --git a/core/src/com/unciv/logic/GameInfo.kt b/core/src/com/unciv/logic/GameInfo.kt
index 7f145eb9e4..d8e892eefb 100644
--- a/core/src/com/unciv/logic/GameInfo.kt
+++ b/core/src/com/unciv/logic/GameInfo.kt
@@ -417,7 +417,8 @@ class GameInfo {
 
         for (civInfo in civilizations) {
             for (unit in civInfo.getCivUnits())
-                unit.updateVisibleTiles() // this needs to be done after all the units are assigned to their civs and all other transients are set
+                unit.updateVisibleTiles(false) // this needs to be done after all the units are assigned to their civs and all other transients are set
+            civInfo.updateViewableTiles() // only run ONCE and not for each unit - this is a huge performance saver!
 
             // Since this depends on the cities of ALL civilizations,
             // we need to wait until we've set the transients of all the cities before we can run this.
diff --git a/core/src/com/unciv/logic/city/CityStats.kt b/core/src/com/unciv/logic/city/CityStats.kt
index 52ca50fd34..6d5baee5c8 100644
--- a/core/src/com/unciv/logic/city/CityStats.kt
+++ b/core/src/com/unciv/logic/city/CityStats.kt
@@ -500,7 +500,6 @@ class CityStats(val cityInfo: CityInfo) {
         statPercentBonusTree = newStatsBonusTree
     }
 
-    /** Does not update tile stats - instead, updating tile stats updates this */
     fun update(currentConstruction: IConstruction = cityInfo.cityConstructions.getCurrentConstruction(),
                updateTileStats:Boolean = true) {
         if (updateTileStats) updateTileStats()
diff --git a/core/src/com/unciv/logic/map/MapUnit.kt b/core/src/com/unciv/logic/map/MapUnit.kt
index 191bcde9e9..1ee03e1929 100644
--- a/core/src/com/unciv/logic/map/MapUnit.kt
+++ b/core/src/com/unciv/logic/map/MapUnit.kt
@@ -402,7 +402,7 @@ class MapUnit {
     /**
      * Update this unit's cache of viewable tiles and its civ's as well.
      */
-    fun updateVisibleTiles() {
+    fun updateVisibleTiles(updateCivViewableTiles:Boolean = true) {
         if (baseUnit.isAirUnit()) {
             viewableTiles = if (hasUnique(UniqueType.SixTilesAlwaysVisible))
                 getTile().getTilesInDistance(6).toList()  // it's that simple
@@ -411,7 +411,7 @@ class MapUnit {
             return
         }
         viewableTiles = getTile().getViewableTilesList(getVisibilityRange())
-        civInfo.updateViewableTiles() // for the civ
+        if (updateCivViewableTiles) civInfo.updateViewableTiles() // for the civ
     }
 
     fun isActionUntilHealed() = action?.endsWith("until healed") == true
diff --git a/docs/uniques.md b/docs/uniques.md
index 9009b31ee3..ce3e53b13f 100644
--- a/docs/uniques.md
+++ b/docs/uniques.md
@@ -1377,7 +1377,6 @@ Applicable to: Conditional
  - "-[amount]% Culture cost of acquiring tiles [cityFilter]" - Deprecated As of 3.19.1, replace with "[-amount]% Culture cost of natural border growth [cityFilter]"
  - "[amount]% cost of natural border growth" - Deprecated As of 3.19.1, replace with "[amount]% Culture cost of natural border growth [cityFilter]"
  - "-[amount]% Gold cost of acquiring tiles [cityFilter]" - Deprecated As of 3.19.1, replace with "[-amount]% Gold cost of acquiring tiles [cityFilter]"
- - "May buy [baseUnitFilter] units for [amount] [stat] [cityFilter] starting from the [era] at an increasing price ([amount])" - Deprecated As of 3.17.9, replace with "May buy [baseUnitFilter] units for [amount] [stat] [cityFilter] at an increasing price ([amount]) <starting from the [era]>"
  - "Maintenance on roads & railroads reduced by [amount]%" - Deprecated As of 3.18.17, replace with "[-amount]% maintenance on road & railroads"
  - "-[amount]% maintenance cost for buildings [cityFilter]" - Deprecated As of 3.18.17, replace with "[-amount]% maintenace cost for buildings [cityFilter]"
  - "+[amount] happiness from each type of luxury resource" - Deprecated As of 3.18.17, replace with "[+amount] Happiness from each type of luxury resource"
@@ -1394,6 +1393,7 @@ Applicable to: Conditional
  - "Melee units pay no movement cost to pillage" - Deprecated As of 3.18.17, replace with "No movement cost to pillage <for [Melee] units>"
  - "[mapUnitFilter] units gain [amount]% more Experience from combat" - Deprecated As of 3.18.12, replace with "[amount]% XP gained from combat <for [mapUnitFilter] units>"
  - "[amount]% maintenance costs for [mapUnitFilter] units" - Deprecated As of 3.18.14, replace with "[amount]% maintenance costs <for [mapUnitFilter] units>"
+ - "May buy [baseUnitFilter] units for [amount] [stat] [cityFilter] starting from the [era] at an increasing price ([amount])" - Deprecated As of 3.17.9, removed as of 3.19.3, replace with "May buy [baseUnitFilter] units for [amount] [stat] [cityFilter] at an increasing price ([amount]) <starting from the [era]>"
  - "Provides a free [buildingName] [cityFilter]" - Deprecated As of 3.17.7 - removed 3.18.19, replace with "Gain a free [buildingName] [cityFilter]"
  - "+[amount]% [stat] [cityFilter]" - Deprecated As of 3.17.10 - removed 3.18.18, replace with "[+amount]% [stat] [cityFilter]"
  - "+[amount]% [stat] in all cities" - Deprecated As of 3.17.10 - removed 3.18.18, replace with "[+amount]% [stat] [in all cities]"