diff --git a/platformio.ini b/platformio.ini
index 75d1a77..b9128b0 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -28,6 +28,13 @@ build_flags =
   -std=c++2a
 # Enable UTF-8 long file names in SdFat
   -DUSE_UTF8_LONG_NAMES=1
+# TCP/IP stack tuning for better WiFi upload performance
+  -DCONFIG_LWIP_TCP_MSS=1460
+  -DCONFIG_LWIP_TCP_SND_BUF_DEFAULT=5744
+  -DCONFIG_LWIP_TCP_WND_DEFAULT=5744
+  -DCONFIG_LWIP_TCP_RECVMBOX_SIZE=12
+  -DCONFIG_LWIP_TCP_QUEUE_OOSEQ=1
+  -DCONFIG_LWIP_TCPIP_RECVMBOX_SIZE=32
 
 ; Board configuration
 board_build.flash_mode = dio