diff --git a/PiwigoDirectorySync/Services/FileIndexer.cs b/PiwigoDirectorySync/Services/FileIndexer.cs
index 7814920..386c131 100644
--- a/PiwigoDirectorySync/Services/FileIndexer.cs
+++ b/PiwigoDirectorySync/Services/FileIndexer.cs
@@ -26,7 +26,7 @@ internal class FileIndexer : IFileIndexer
     {
         var parallelOptions = new ParallelOptions
         {
-            MaxDegreeOfParallelism = Environment.ProcessorCount,
+            MaxDegreeOfParallelism = Math.Min(Environment.ProcessorCount, 8),
             CancellationToken = ct
         };
         await Parallel.ForEachAsync(fileQueue.Reader.ReadAllAsync(ct), parallelOptions,