diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index b8ba6b4..c8dad11 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -123,7 +123,7 @@
  *
  * :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000]
  */
-#define BAUDRATE 115200
+#define BAUDRATE 250000
 
 // Enable the Bluetooth serial interface on AT90USB devices
 //#define BLUETOOTH
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 23a5a67..05c8b89 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -880,7 +880,7 @@
 
 // The ASCII buffer for serial input
 #define MAX_CMD_SIZE 96
-#define BUFSIZE 16
+#define BUFSIZE 4
 
 // Transmission to Host Buffer Size
 // To save 386 bytes of PROGMEM (and TX_BUFFER_SIZE+3 bytes of RAM) set to 0.
@@ -889,13 +889,13 @@
 // For debug-echo: 128 bytes for the optimal speed.
 // Other output doesn't need to be that speedy.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256]
-#define TX_BUFFER_SIZE 4
+#define TX_BUFFER_SIZE 0
 
 // Host Receive Buffer Size
 // Without XON/XOFF flow control (see SERIAL_XON_XOFF below) 32 bytes should be enough.
 // To use flow control, set this buffer size to at least 1024 bytes.
 // :[0, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048]
-#define RX_BUFFER_SIZE 32
+//#define RX_BUFFER_SIZE 32
 
 #if RX_BUFFER_SIZE >= 1024
   // Enable to have the controller send XON/XOFF control characters to