diff --git a/SerialPorts.c b/SerialPorts.c
index 2cb15ef..8f54f88 100644
--- a/SerialPorts.c
+++ b/SerialPorts.c
@@ -6,7 +6,7 @@
 
 tSerialPorts SERIAL_PORTS;
 
-uint8_t buf_USART3_DMA[3200];
+uint8_t buf_USART3_DMA[256];
 
 // IDLE прерывание
 void USART3_IRQHandler() {
@@ -44,7 +44,7 @@ static void vSerialPort_InitUSART3(tSerialPortArtery *env) {
             1, 3, 1, 4,
             false, 0xFF,
             buf_USART3_DMA, sizeof(buf_USART3_DMA),
-            3200, 3200
+            256, 256
     );
 
 }
@@ -57,7 +57,7 @@ static void vSerialPort_InitUSART3(tSerialPortArtery *env) {
 
 
 
-uint8_t buf_USART5_DMA[3200];
+uint8_t buf_USART5_DMA[256];
 
 // IDLE прерывание
 void UART5_IRQHandler() {
@@ -98,7 +98,7 @@ static void vSerialPort_InitUSART5(tSerialPortArtery *env) {
             1, 1, 1, 2,
             false, 0xFF,
             buf_USART5_DMA, sizeof(buf_USART5_DMA),
-            3200, 3200
+            256, 256
     );
 
 }
@@ -498,7 +498,7 @@ void SerialPorts_Init(tRs485DirectionPins *directionPins) {
     vSerialPort_InitUSART6(&env->ComInt);
     SERIAL_PORTS.ComIntIO = vSerialPortGetIo(&SERIAL_PORTS.ComInt);
 */
-    SerialPortP2p_Init(&env->cliVirtualPort, 5 * 1024, 1024);
+    SerialPortP2p_Init(&env->cliVirtualPort, 1024, 1024);
     env->cliVirtualInIo = SerialPortP2p_GetIoFirst(&env->cliVirtualPort);
     env->cliVirtualOutIo = SerialPortP2p_GetIoSecond(&env->cliVirtualPort);