diff --git a/services/web/app/coffee/Features/Downloads/ProjectZipStreamManager.coffee b/services/web/app/coffee/Features/Downloads/ProjectZipStreamManager.coffee
index d7f5c4054c..91256025f5 100644
--- a/services/web/app/coffee/Features/Downloads/ProjectZipStreamManager.coffee
+++ b/services/web/app/coffee/Features/Downloads/ProjectZipStreamManager.coffee
@@ -48,4 +48,4 @@ module.exports = ProjectZipStreamManager =
 							archive.append stream, name: path
 							stream.on "end", () ->
 								callback()
-			async.series jobs, callback
+			async.parallelLimit jobs, 5, callback