diff --git a/Fastfox.js b/Fastfox.js
index 3107139e..2721a430 100644
--- a/Fastfox.js
+++ b/Fastfox.js
@@ -3,7 +3,7 @@
  * Fastfox                                                                              *
  * "Non ducor duco"                                                                     *
  * priority: speedy browsing                                                            *
- * version: 122                                                                         *
+ * version: 122.1                                                                       *
  * url: https://github.com/yokoffing/Betterfox                                          *
  ***************************************************************************************/
 
@@ -309,11 +309,13 @@ user_pref("image.mem.decode_bytes_at_a_time", 32768); // default=16384; alt=6553
 ****************************************************************************/
 
 // PREF: use bigger packets
+// [WARNING] Cannot open HTML files bigger than 4MB if changed [2].
 // Reduce Firefox's CPU usage by requiring fewer application-to-driver data transfers.
 // However, it does not affect the actual packet sizes transmitted over the network.
 // [1] https://www.mail-archive.com/support-seamonkey@lists.mozilla.org/msg74561.html
-user_pref("network.buffer.cache.size", 262144); // 256 kb; default=32768 (32 kb)
-user_pref("network.buffer.cache.count", 128); // default=24
+// [2] https://github.com/yokoffing/Betterfox/issues/279
+//user_pref("network.buffer.cache.size", 262144); // 256 kb; default=32768 (32 kb)
+//user_pref("network.buffer.cache.count", 128); // default=24
 
 // PREF: increase the absolute number of HTTP connections
 // [1] https://kb.mozillazine.org/Network.http.max-connections
diff --git a/user.js b/user.js
index 2ed2caa7..63a11aab 100644
--- a/user.js
+++ b/user.js
@@ -10,7 +10,7 @@
 /****************************************************************************
  * Betterfox                                                                *
  * "Ad meliora"                                                             *
- * version: 122                                                             *
+ * version: 122.1                                                           *
  * url: https://github.com/yokoffing/Betterfox                              *
 ****************************************************************************/
 
@@ -37,8 +37,6 @@ user_pref("media.cache_resume_threshold", 3600);
 user_pref("image.mem.decode_bytes_at_a_time", 32768);
 
 /** NETWORK ***/
-user_pref("network.buffer.cache.size", 262144);
-user_pref("network.buffer.cache.count", 128);
 user_pref("network.http.max-connections", 1800);
 user_pref("network.http.max-persistent-connections-per-server", 10);
 user_pref("network.http.max-urgent-start-excessive-connections-per-host", 5);