diff --git a/src/lang/english_AU.txt b/src/lang/english_AU.txt
--- a/src/lang/english_AU.txt
+++ b/src/lang/english_AU.txt
@@ -1926,6 +1926,10 @@ STR_CONFIG_SETTING_LARGER_TOWNS_DISABLED
 STR_CONFIG_SETTING_CITY_SIZE_MULTIPLIER                         :Initial city size multiplier: {STRING}
 STR_CONFIG_SETTING_CITY_SIZE_MULTIPLIER_HELPTEXT                :Average size of cities relative to normal towns at start of the game
 
+STR_CONFIG_SETTING_LINKGRAPH_RECALC_INTERVAL                    :Update distribution graph every {STRING}{NBSP}second{P 0:2 "" s}
+STR_CONFIG_SETTING_LINKGRAPH_RECALC_INTERVAL_HELPTEXT           :Time between subsequent recalculations of the link graph. Each recalculation calculates the plans for one component of the graph. That means that a value X for this setting does not mean the whole graph will be updated every X seconds. Only some component will. The shorter you set it the more CPU time will be necessary to calculate it. The longer you set it the longer it will take until the cargo distribution starts on new routes.
+STR_CONFIG_SETTING_LINKGRAPH_RECALC_TIME                        :Take {STRING}{NBSP}second{P 0:2 "" s} for recalculation of distribution graph
+STR_CONFIG_SETTING_LINKGRAPH_RECALC_TIME_HELPTEXT               :Time taken for each recalculation of a link graph component. When a recalculation is started, a thread is spawned which is allowed to run for this number of seconds. The shorter you set this the more likely it is that the thread is not finished when it's supposed to. Then the game stops until it is ("lag"). The longer you set it the longer it takes for the distribution to be updated when routes change.
 
 STR_CONFIG_SETTING_DISTRIBUTION_PAX                             :Distribution mode for passengers: {STRING}
 STR_CONFIG_SETTING_DISTRIBUTION_PAX_HELPTEXT                    :"Symmetric" means that roughly the same number of passengers will go from a station A to a station B as from B to A. "Asymmetric" means that arbitrary numbers of passengers can go in either direction. "Manual" means that no automatic distribution will take place for passengers.
@@ -4634,7 +4638,6 @@ STR_AI_SETTINGS_CAPTION_GAMESCRIPT      
 STR_AI_SETTINGS_CLOSE                                           :{BLACK}Close
 STR_AI_SETTINGS_RESET                                           :{BLACK}Reset
 STR_AI_SETTINGS_SETTING                                         :{STRING}: {ORANGE}{STRING}
-STR_AI_SETTINGS_START_DELAY                                     :Number of days to start this AI after the previous one (give or take): {ORANGE}{STRING}
 
 
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