diff --git a/changelog.d/15700.misc b/changelog.d/15700.misc
new file mode 100644
index 000000000000..e96bc681aa86
--- /dev/null
+++ b/changelog.d/15700.misc
@@ -0,0 +1 @@
+Speed up background jobs `populate_full_user_id_user_filters` and `populate_full_user_id_profiles`.
\ No newline at end of file
diff --git a/synapse/storage/databases/main/filtering.py b/synapse/storage/databases/main/filtering.py
index da31eb44dc96..f777777cbf48 100644
--- a/synapse/storage/databases/main/filtering.py
+++ b/synapse/storage/databases/main/filtering.py
@@ -71,7 +71,7 @@ def _get_last_id(txn: LoggingTransaction) -> Optional[str]:
                     SELECT user_id FROM user_filters
                     WHERE user_id > ?
                     ORDER BY user_id
-                    LIMIT 1 OFFSET 50
+                    LIMIT 1 OFFSET 1000
                   """
             txn.execute(sql, (lower_bound_id,))
             res = txn.fetchone()
diff --git a/synapse/storage/databases/main/profile.py b/synapse/storage/databases/main/profile.py
index 65c92bef51cf..21d54c7a7a7e 100644
--- a/synapse/storage/databases/main/profile.py
+++ b/synapse/storage/databases/main/profile.py
@@ -65,7 +65,7 @@ def _get_last_id(txn: LoggingTransaction) -> Optional[str]:
                     SELECT user_id FROM profiles
                     WHERE user_id > ?
                     ORDER BY user_id
-                    LIMIT 1 OFFSET 50
+                    LIMIT 1 OFFSET 1000
                   """
             txn.execute(sql, (lower_bound_id,))
             res = txn.fetchone()