diff --git a/src/helpers/bridges/MQTTBridge.cpp b/src/helpers/bridges/MQTTBridge.cpp
index 07cf6e87..952e7a5d 100644
--- a/src/helpers/bridges/MQTTBridge.cpp
+++ b/src/helpers/bridges/MQTTBridge.cpp
@@ -179,7 +179,39 @@ MQTTBridge::MQTTBridge(NodePrefs *prefs, mesh::PacketManager *mgr, mesh::RTCCloc
 
 void MQTTBridge::begin() {
   MQTT_DEBUG_PRINTLN("Initializing MQTT Bridge...");
-  
+
+  // PSRAM diagnostic - helps debug memory fragmentation on boards with external RAM
+  #ifdef BOARD_HAS_PSRAM
+  {
+    bool psram_available = psramFound();
+    size_t psram_size = 0;
+    size_t psram_free = 0;
+    if (psram_available) {
+      psram_size = ESP.getPsramSize();
+      psram_free = ESP.getFreePsram();
+    }
+    MQTT_DEBUG_PRINTLN("PSRAM: found=%s, size=%u, free=%u",
+      psram_available ? "YES" : "NO", psram_size, psram_free);
+    if (!psram_available) {
+      MQTT_DEBUG_PRINTLN("PSRAM: board has PSRAM flag but psramFound()=false. "
+        "Trying explicit psramInit()...");
+      bool init_result = psramInit();
+      MQTT_DEBUG_PRINTLN("PSRAM: psramInit() returned %s", init_result ? "true" : "false");
+      if (init_result) {
+        psram_size = ESP.getPsramSize();
+        psram_free = ESP.getFreePsram();
+        MQTT_DEBUG_PRINTLN("PSRAM: after init - size=%u, free=%u", psram_size, psram_free);
+      }
+    }
+    // Log internal heap for comparison
+    MQTT_DEBUG_PRINTLN("PSRAM: internal_free=%u, internal_max_alloc=%u",
+      heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
+      heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL));
+  }
+  #else
+  MQTT_DEBUG_PRINTLN("PSRAM: not configured for this board (no BOARD_HAS_PSRAM)");
+  #endif
+
   // Check if WiFi credentials are configured first
   if (!isWiFiConfigValid(_prefs)) {
     MQTT_DEBUG_PRINTLN("MQTT Bridge initialization skipped - WiFi credentials not configured");
diff --git a/variants/heltec_t190/platformio.ini b/variants/heltec_t190/platformio.ini
index 74cba657..ca6e9739 100644
--- a/variants/heltec_t190/platformio.ini
+++ b/variants/heltec_t190/platformio.ini
@@ -112,9 +112,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
 build_src_filter = ${Heltec_T190_base.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
   +<helpers/MQTTMessageBuilder.cpp>
diff --git a/variants/heltec_v3/platformio.ini b/variants/heltec_v3/platformio.ini
index 3b76c7bc..a4f3706c 100644
--- a/variants/heltec_v3/platformio.ini
+++ b/variants/heltec_v3/platformio.ini
@@ -123,9 +123,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
   -D MQTT_WIFI_TX_POWER=WIFI_POWER_19_5dBm
   -D MQTT_WIFI_POWER_SAVE_DEFAULT=1
@@ -186,9 +183,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
   -D MQTT_WIFI_TX_POWER=WIFI_POWER_19_5dBm
   -D MQTT_WIFI_POWER_SAVE_DEFAULT=1
diff --git a/variants/heltec_v4/platformio.ini b/variants/heltec_v4/platformio.ini
index cef742ac..ddbd932e 100644
--- a/variants/heltec_v4/platformio.ini
+++ b/variants/heltec_v4/platformio.ini
@@ -143,9 +143,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D MQTT_WIFI_TX_POWER=WIFI_POWER_19_5dBm
   -D MQTT_WIFI_POWER_SAVE_DEFAULT=1
 #  -D WIFI_SSID='"ssid"'
@@ -186,9 +183,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D MQTT_WIFI_TX_POWER=WIFI_POWER_19_5dBm
   -D MQTT_WIFI_POWER_SAVE_DEFAULT=1
 build_src_filter = ${Heltec_lora32_v4.build_src_filter}
diff --git a/variants/lilygo_t3s3/platformio.ini b/variants/lilygo_t3s3/platformio.ini
index ebf2e47f..4382fe09 100644
--- a/variants/lilygo_t3s3/platformio.ini
+++ b/variants/lilygo_t3s3/platformio.ini
@@ -115,9 +115,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
@@ -157,9 +154,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 build_src_filter = ${LilyGo_T3S3_sx1262.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
diff --git a/variants/lilygo_tbeam_SX1262/platformio.ini b/variants/lilygo_tbeam_SX1262/platformio.ini
index f19448a3..6fbe6431 100644
--- a/variants/lilygo_tbeam_SX1262/platformio.ini
+++ b/variants/lilygo_tbeam_SX1262/platformio.ini
@@ -149,9 +149,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
 #  -D MQTT_SERVER='"your-mqtt-broker.com"'
@@ -189,9 +186,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
 build_src_filter = ${LilyGo_TBeam_SX1262.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
   +<helpers/MQTTMessageBuilder.cpp>
diff --git a/variants/lilygo_tbeam_SX1276/platformio.ini b/variants/lilygo_tbeam_SX1276/platformio.ini
index 16a1c403..850191e1 100644
--- a/variants/lilygo_tbeam_SX1276/platformio.ini
+++ b/variants/lilygo_tbeam_SX1276/platformio.ini
@@ -149,9 +149,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
 #  -D MQTT_SERVER='"your-mqtt-broker.com"'
@@ -189,9 +186,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
 build_src_filter = ${LilyGo_TBeam_SX1276.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
   +<helpers/MQTTMessageBuilder.cpp>
diff --git a/variants/lilygo_tbeam_supreme_SX1262/platformio.ini b/variants/lilygo_tbeam_supreme_SX1262/platformio.ini
index f76cae79..d5319aab 100644
--- a/variants/lilygo_tbeam_supreme_SX1262/platformio.ini
+++ b/variants/lilygo_tbeam_supreme_SX1262/platformio.ini
@@ -110,9 +110,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
@@ -150,9 +147,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 build_src_filter = ${T_Beam_S3_Supreme_SX1262.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
diff --git a/variants/station_g2/platformio.ini b/variants/station_g2/platformio.ini
index f7944543..3b03c44e 100644
--- a/variants/station_g2/platformio.ini
+++ b/variants/station_g2/platformio.ini
@@ -187,9 +187,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 build_src_filter = ${Station_G2.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>
@@ -298,9 +295,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
diff --git a/variants/xiao_s3_wio/platformio.ini b/variants/xiao_s3_wio/platformio.ini
index 29eaf753..5267103b 100644
--- a/variants/xiao_s3_wio/platformio.ini
+++ b/variants/xiao_s3_wio/platformio.ini
@@ -103,9 +103,6 @@ build_flags =
   -D MESH_PACKET_LOGGING=1
   -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 #  -D WIFI_SSID='"ssid"'
 #  -D WIFI_PWD='"password"'
@@ -144,9 +141,6 @@ build_flags =
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D CONFIG_MBEDTLS_CERTIFICATE_BUNDLE=y
-  -D CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN=y
-  -D CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN=4096
-  -D CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN=2048
   -D ESP32_CPU_FREQ=160
 build_src_filter = ${Xiao_S3_WIO.build_src_filter}
   +<helpers/bridges/MQTTBridge.cpp>