Reduce Batch Insert Number in RecommendationJob to try to reduce issue of database locking 2, a=chris

diff --git a/src/library/media_jobs/RecommendationJob.php b/src/library/media_jobs/RecommendationJob.php
index b0803de8d..243758ea8 100644
--- a/src/library/media_jobs/RecommendationJob.php
+++ b/src/library/media_jobs/RecommendationJob.php
@@ -73,7 +73,7 @@ class RecommendationJob extends MediaJob
      * Number of inserts to try to group into a single insert statement
      * before execution
      */
-    const BATCH_SQL_INSERT_NUM = 50;
+    const BATCH_SQL_INSERT_NUM = 10;
     /**
      * Maximum number of group items used in making recommendations
      */