diff --git a/app/store/config.ts b/app/store/config.ts
index cbc3199fa..09339158c 100644
--- a/app/store/config.ts
+++ b/app/store/config.ts
@@ -33,7 +33,7 @@ export const DEFAULT_CONFIG = {
   fontSize: 14,
   theme: Theme.Auto as Theme,
   tightBorder: !!getClientConfig()?.isApp,
-  sendPreviewBubble: true,
+  sendPreviewBubble: false,
   enableAutoGenerateTitle: true,
   sidebarWidth: DEFAULT_SIDEBAR_WIDTH,
 
@@ -49,7 +49,7 @@ export const DEFAULT_CONFIG = {
     model: "gpt-4-1106-preview" as ModelType,
     temperature: 0.5,
     top_p: 1,
-    max_tokens: 15000,
+    max_tokens: 8000,
     presence_penalty: 0,
     frequency_penalty: 0,
     sendMemory: true,