diff --git a/platformio.ini b/platformio.ini
index 3d6a646..ad7ee9a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -82,7 +82,7 @@ build_flags =
 extends = env:esp32
 board = esp32-c3-devkitc-02
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults;sdkconfig.singlecore.defaults"
 
 [env:esp32-s3]
 extends = env:esp32
@@ -100,14 +100,14 @@ board_build.cmake_extra_args =
 extends = env:esp32
 board = esp32-c6-devkitm-1
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults;sdkconfig.singlecore.defaults"
 
 [env:esp32-h2]
 extends = env:esp32
 board = esp32-h2-devkitm-1
 board_build.cmake_extra_args =
     -DNUKI_TARGET_H2=y
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults;sdkconfig.singlecore.defaults"
 lib_ignore =
     BLE
     BluetoothSerial
@@ -122,7 +122,7 @@ lib_ignore =
 extends = env:esp32
 board = nuki-esp32solo1
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults;sdkconfig.defaults.esp32-solo1"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.release.defaults;sdkconfig.singlecore.defaults;sdkconfig.defaults.esp32-solo1"
 
 [env:esp32_dbg]
 extends = env:esp32
@@ -140,7 +140,7 @@ build_flags =
 extends = env:esp32-c3
 custom_build = debug
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults;sdkconfig.singlecore.defaults"
 build_flags =
     ${env.build_flags}
     -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
@@ -152,7 +152,7 @@ build_flags =
 extends = env:esp32-c6
 custom_build = debug
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults;sdkconfig.singlecore.defaults"
 build_flags =
     ${env.build_flags}
     -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
@@ -165,7 +165,7 @@ extends = env:esp32-h2
 custom_build = debug
 board_build.cmake_extra_args =
     -DNUKI_TARGET_H2=y
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults;sdkconfig.singlecore.defaults"
 build_flags =
     ${env.build_flags}
     -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
@@ -201,7 +201,7 @@ build_flags =
 extends = env:esp32-solo1
 custom_build = debug
 board_build.cmake_extra_args =
-    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults;sdkconfig.defaults.esp32-solo1"
+    -DSDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.debug.defaults;sdkconfig.singlecore.defaults;sdkconfig.defaults.esp32-solo1"
 build_flags =
     ${env.build_flags}
     -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index d5bbbbe..650f046 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -14,7 +14,7 @@ CONFIG_BT_BLUEDROID_ENABLED=n
 CONFIG_BT_NIMBLE_ENABLED=y
 CONFIG_BT_NIMBLE_LOG_LEVEL_NONE=y
 CONFIG_BT_NIMBLE_LOG_LEVEL=0
-CONFIG_BT_NIMBLE_MAX_CONNECTIONS=8
+CONFIG_BT_NIMBLE_MAX_CONNECTIONS=4
 CONFIG_BT_NIMBLE_MAX_BONDS=8
 CONFIG_BT_NIMBLE_NVS_PERSIST=y
 CONFIG_BT_NIMBLE_GATT_MAX_PROCS=8
@@ -46,9 +46,11 @@ CONFIG_BT_NIMBLE_HS_FLOW_CTRL_THRESH=2
 CONFIG_BT_NIMBLE_HS_FLOW_CTRL_TX_ON_DISCONNECT=y
 CONFIG_BT_NIMBLE_RPA_TIMEOUT=900
 CONFIG_BT_NIMBLE_CRYPTO_STACK_MBEDTLS=y
-CONFIG_BTDM_CTRL_BLE_MAX_CONN=8
-CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=8
-CONFIG_BT_ACL_CONNECTIONS=8
+CONFIG_BTDM_CTRL_BLE_MAX_CONN=4
+CONFIG_BTDM_CTRL_BLE_MAX_CONN_EFF=4
+CONFIG_BT_CTRL_BLE_MAX_ACT=4
+CONFIG_BT_CTRL_BLE_MAX_ACT_EFF=4
+CONFIG_BT_ACL_CONNECTIONS=4
 CONFIG_BTDM_CTRLR_BR_EDR_MAX_ACL_CONN_EFF=0
 CONFIG_BTDM_CTRL_BR_EDR_MAX_SYNC_CONN_EFF=0
 CONFIG_BTDM_CTRL_PINNED_TO_CORE=0
@@ -108,4 +110,12 @@ CONFIG_BOOTLOADER_WDT_TIME_MS=120000
 CONFIG_LWIP_MAX_SOCKETS=24
 CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP=y
 CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=1024
-CONFIG_ARDUINO_LOOP_STACK_SIZE=12288
\ No newline at end of file
+CONFIG_ARDUINO_LOOP_STACK_SIZE=12288
+CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=4
+CONFIG_ESP_WIFI_STATIC_TX_BUFFER_NUM=4
+CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER_NUM=8
+CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=8
+CONFIG_ESP_WIFI_RX_BA_WIN=6
+CONFIG_ESP_WIFI_IRAM_OPT=n
+CONFIG_ESP_WIFI_RX_IRAM_OPT=n
+CONFIG_MBEDTLS_DYNAMIC_BUFFER=y
\ No newline at end of file
diff --git a/sdkconfig.singlecore.defaults b/sdkconfig.singlecore.defaults
new file mode 100644
index 0000000..c4c446a
--- /dev/null
+++ b/sdkconfig.singlecore.defaults
@@ -0,0 +1,3 @@
+CONFIG_MBEDTLS_IRAM_8BIT_MEM_ALLOC=y
+CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT=y
+CONFIG_ESP_WIFI_TX_BUFFER_TYPE=1
\ No newline at end of file