diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index 7a5020ed..15419e3a 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -91,6 +91,10 @@ CONFIG_LWIP_DHCP_GET_NTP_SRV=y
 CONFIG_LWIP_DHCP_MAX_NTP_SERVERS=1
 CONFIG_LWIP_LOCAL_HOSTNAME="willow"
 CONFIG_LWIP_TCPIP_TASK_AFFINITY_CPU0=y
+CONFIG_LWIP_TCP_SND_BUF_DEFAULT=23040
+CONFIG_LWIP_TCP_WND_DEFAULT=23040
+CONFIG_LWIP_TCP_RECVMBOX_SIZE=18
+CONFIG_LWIP_TCP_SACK_OUT=y
 CONFIG_MBEDTLS_CERTIFICATE_BUNDLE_MAX_CERTS=1000
 CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC=y
 CONFIG_MBEDTLS_HARDWARE_AES=y