diff --git a/config/immich.nix b/config/immich.nix
index 5770909..8eb75a2 100644
--- a/config/immich.nix
+++ b/config/immich.nix
@@ -81,7 +81,7 @@
     notifications.concurrency = 5;
     search.concurrency = 5;
     sidecar.concurrency = 5;
-    ocr.concurrency = 2;  # ML-intensive
+    ocr.concurrency = 1;  # ML-intensive
     smartSearch.concurrency = 2;  # ML-intensive
     thumbnailGeneration.concurrency = 7;
     videoConversion.concurrency = 1;  # Hardware-accelerated, serialize for stability