diff --git a/planetiler-core/src/main/java/com/onthegomap/planetiler/util/CompareArchives.java b/planetiler-core/src/main/java/com/onthegomap/planetiler/util/CompareArchives.java
index 9496ee96a2..426f770b84 100644
--- a/planetiler-core/src/main/java/com/onthegomap/planetiler/util/CompareArchives.java
+++ b/planetiler-core/src/main/java/com/onthegomap/planetiler/util/CompareArchives.java
@@ -158,7 +158,7 @@ record Diff(Tile a, Tile b) {}
           }
         }
       })
-      .addBuffer("diffs", 1_000)
+      .addBuffer("diffs", 50_000, 1_000)
       .sinkTo("process", config.featureProcessThreads(), prev -> {
         for (var diff : prev) {
           var a = diff.a();