diff --git a/src/Jobs/Crontab.hs b/src/Jobs/Crontab.hs
index d660e3552..c784f572b 100644
--- a/src/Jobs/Crontab.hs
+++ b/src/Jobs/Crontab.hs
@@ -324,7 +324,7 @@ determineCrontab = execWriterT $ do
                  , jIteration     = fromInteger nextInterval
                  })
               Cron
-                { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ nextIntervalTime
+                { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ $ toTimeOfDay 23 30 0 $ utctDay nextIntervalTime
                 , cronRepeat    = CronRepeatNever
                 , cronRateLimit = appSynchroniseLdapUsersInterval
                 , cronNotAfter  = Right . CronTimestamp . utcToLocalTimeTZ appTZ $ addUTCTime appSynchroniseLdapUsersInterval nextIntervalTime
@@ -337,6 +337,7 @@ determineCrontab = execWriterT $ do
       , Just syncWithin <- appSynchroniseAvsUsersWithin
       , Just cInterval <- appJobCronInterval
         -> do
+          now <- liftIO getCurrentTime
           nextIntervals <- getNextIntervals syncWithin appSynchroniseAvsUsersInterval cInterval
 
           forM_ nextIntervals $ \(nextEpoch, nextInterval, nextIntervalTime, numIntervals) -> do
@@ -345,12 +346,12 @@ determineCrontab = execWriterT $ do
                  { jEpoch         = fromInteger nextEpoch
                  , jNumIterations = fromInteger numIntervals
                  , jIteration     = fromInteger nextInterval
-                 , jSynchAfter    = Nothing
+                 , jSynchAfter    = Just $ addWeeks (-1) now -- at most once per week
                  })
               Cron
-                { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ nextIntervalTime
+                { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ $ toTimeOfDay 22 0 0 $ utctDay nextIntervalTime
                 , cronRepeat    = CronRepeatNever
-                , cronRateLimit = appSynchroniseLdapUsersInterval
+                , cronRateLimit = appSynchroniseAvsUsersInterval
                 , cronNotAfter  = Right . CronTimestamp . utcToLocalTimeTZ appTZ $ addUTCTime appSynchroniseAvsUsersInterval nextIntervalTime
                 }
       | otherwise
@@ -367,28 +368,28 @@ determineCrontab = execWriterT $ do
              }
           )
           Cron
-            { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ nextIntervalTime
+            { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ $ toTimeOfDay 22 0 0 $ utctDay nextIntervalTime
             , cronRepeat    = CronRepeatNever
             , cronRateLimit = appPruneUnreferencedFilesInterval
             , cronNotAfter  = Right . CronTimestamp . utcToLocalTimeTZ appTZ $ addUTCTime appPruneUnreferencedFilesInterval nextIntervalTime
             }
 
-    whenIsJust ((,) <$> appStudyFeaturesRecacheRelevanceWithin <*> appJobCronInterval) $ \(within, cInterval) -> do
-      nextIntervals <- getNextIntervals within appStudyFeaturesRecacheRelevanceInterval cInterval
-      forM_ nextIntervals $ \(nextEpoch, nextInterval, nextIntervalTime, numIntervals) -> do
-        tell $ HashMap.singleton
-          (JobCtlQueue JobStudyFeaturesRecacheRelevance
-             { jEpoch         = fromInteger nextEpoch
-             , jNumIterations = fromInteger numIntervals
-             , jIteration     = fromInteger nextInterval
-             }
-          )
-          Cron
-            { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ nextIntervalTime
-            , cronRepeat    = CronRepeatNever
-            , cronRateLimit = appStudyFeaturesRecacheRelevanceInterval
-            , cronNotAfter  = Right . CronTimestamp . utcToLocalTimeTZ appTZ $ addUTCTime appStudyFeaturesRecacheRelevanceInterval nextIntervalTime
-            }
+    -- whenIsJust ((,) <$> appStudyFeaturesRecacheRelevanceWithin <*> appJobCronInterval) $ \(within, cInterval) -> do
+    --   nextIntervals <- getNextIntervals within appStudyFeaturesRecacheRelevanceInterval cInterval
+    --   forM_ nextIntervals $ \(nextEpoch, nextInterval, nextIntervalTime, numIntervals) -> do
+    --     tell $ HashMap.singleton
+    --       (JobCtlQueue JobStudyFeaturesRecacheRelevance
+    --          { jEpoch         = fromInteger nextEpoch
+    --          , jNumIterations = fromInteger numIntervals
+    --          , jIteration     = fromInteger nextInterval
+    --          }
+    --       )
+    --       Cron
+    --         { cronInitial   = CronTimestamp $ utcToLocalTimeTZ appTZ toTimeOfDay 22 0 0 $ utctDay nextIntervalTime
+    --         , cronRepeat    = CronRepeatNever
+    --         , cronRateLimit = appStudyFeaturesRecacheRelevanceInterval
+    --         , cronNotAfter  = Right . CronTimestamp . utcToLocalTimeTZ appTZ $ addUTCTime appStudyFeaturesRecacheRelevanceInterval nextIntervalTime
+    --         }
 
     whenIsJust appQualificationCheckHour $ \hour -> tell $ HashMap.singleton
       (JobCtlQueue JobLmsQualificationsEnqueue)