diff --git a/ports/stm32/lwip_inc/lwipopts.h b/ports/stm32/lwip_inc/lwipopts.h
index aa6cf85874..5711ba8944 100644
--- a/ports/stm32/lwip_inc/lwipopts.h
+++ b/ports/stm32/lwip_inc/lwipopts.h
@@ -14,11 +14,12 @@
 
 // Increase memory for lwIP to get better performance.
 #if defined(STM32N6)
-#define MEM_SIZE                        (16 * 1024)
+#define MEM_SIZE                        (64 * 1024)
+#define PBUF_POOL_SIZE                  (32)
 #define TCP_MSS                         (1460)
-#define TCP_WND                         (8 * TCP_MSS)
-#define TCP_SND_BUF                     (8 * TCP_MSS)
-#define MEMP_NUM_TCP_SEG                (32)
+#define TCP_WND                         (16 * TCP_MSS)
+#define TCP_SND_BUF                     (16 * TCP_MSS)
+#define MEMP_NUM_TCP_SEG                (64)
 #endif
 
 // Include common lwIP configuration.