diff --git a/lib/flame/code_sync.ex b/lib/flame/code_sync.ex
index c59c473..b7f6d6a 100644
--- a/lib/flame/code_sync.ex
+++ b/lib/flame/code_sync.ex
@@ -10,7 +10,8 @@ defmodule FLAME.CodeSync.PackagedStream do
             deleted_paths: [],
             purge_modules: [],
             verbose: false,
-            compress: false
+            compress: false,
+            chunk_size: 64_000
 end
 
 defmodule FLAME.CodeSync do
@@ -32,7 +33,8 @@ defmodule FLAME.CodeSync do
             deleted_paths: [],
             purge_modules: [],
             verbose: false,
-            compress: false
+            compress: false,
+            chunk_size: 64_000
 
   def new(opts \\ []) do
     Keyword.validate!(opts, [
@@ -42,7 +44,8 @@ defmodule FLAME.CodeSync do
       :sync_beams,
       :start_apps,
       :verbose,
-      :compress
+      :compress,
+      :chunk_size
     ])
 
     copy_paths =
@@ -76,7 +79,8 @@ defmodule FLAME.CodeSync do
       extract_dir: Keyword.get(opts, :extract_dir, {Function, :identity, ["/"]}),
       start_apps: Keyword.get(opts, :start_apps, true),
       verbose: Keyword.get(opts, :verbose, false),
-      compress: Keyword.get(opts, :compress, false)
+      compress: Keyword.get(opts, :compress, false),
+      chunk_size: Keyword.get(opts, :chunk_size, 64_000)
     })
   end
 
@@ -169,7 +173,7 @@ defmodule FLAME.CodeSync do
 
         :ok = :erl_tar.close(tar)
 
-        File.stream!(out_path, [], 64_000)
+        File.stream!(out_path, [], code.chunk_size)
       end
 
     %PackagedStream{
@@ -183,7 +187,8 @@ defmodule FLAME.CodeSync do
       apps_to_start: code.apps_to_start,
       stream: out_stream,
       verbose: code.verbose,
-      compress: code.compress
+      compress: code.compress,
+      chunk_size: code.chunk_size
     }
   end
 
diff --git a/lib/flame/pool.ex b/lib/flame/pool.ex
index 05401a3..a2d05c6 100644
--- a/lib/flame/pool.ex
+++ b/lib/flame/pool.ex
@@ -222,7 +222,8 @@ defmodule FLAME.Pool do
       :sync_beams,
       :start_apps,
       :verbose,
-      :compress
+      :compress,
+      :chunk_size
     ])
 
     GenServer.start_link(__MODULE__, opts, name: Keyword.fetch!(opts, :name))
@@ -403,6 +404,7 @@ defmodule FLAME.Pool do
       if code_sync_opts = opts[:code_sync] do
         code_sync = CodeSync.new(Keyword.put(code_sync_opts, :sync_beams, []))
         %CodeSync.PackagedStream{} = parent_stream = CodeSync.package_to_stream(code_sync)
+        IO.inspect(File.stat!(parent_stream.stream.path))
         parent_stream
       end
 
diff --git a/lib/flame/runner.ex b/lib/flame/runner.ex
index 6153b99..0ce239f 100644
--- a/lib/flame/runner.ex
+++ b/lib/flame/runner.ex
@@ -306,11 +306,12 @@ defmodule FLAME.Runner do
                   # ensure app is fully started if parent connects before up
                   if otp_app, do: {:ok, _} = Application.ensure_all_started(otp_app)
 
+                  if base_sync_stream, do: CodeSync.extract_packaged_stream(base_sync_stream)
+                  if beams_stream, do: CodeSync.extract_packaged_stream(beams_stream)
+
                   :ok =
                     Terminator.schedule_idle_shutdown(term, idle_after, idle_check, single_use)
 
-                  if base_sync_stream, do: CodeSync.extract_packaged_stream(base_sync_stream)
-                  if beams_stream, do: CodeSync.extract_packaged_stream(beams_stream)
                   :ok
                 end)
 
@@ -348,7 +349,8 @@ defmodule FLAME.Runner do
       :tmp_dir,
       :extract_dir,
       :verbose,
-      :compress
+      :compress,
+      :chunk_size
     ])
 
     {idle_shutdown_after_ms, idle_check} =