diff --git a/iso.conf b/iso.conf
index 19f688d..1c95fa8 100644
--- a/iso.conf
+++ b/iso.conf
@@ -7,11 +7,11 @@ CONFIG_BT_CTLR_ADV_ISO_STREAM_MAX=5
 CONFIG_BT_CTLR_SYNC_PERIODIC_ADV_LIST_SIZE=5
 
 CONFIG_BT_BUF_EVT_RX_COUNT=16
-CONFIG_BT_CTLR_ADV_ISO_PDU_LEN_MAX=247
+CONFIG_BT_CTLR_ADV_ISO_PDU_LEN_MAX=140
 
 # ISO Transmissions
 CONFIG_BT_CTLR_ISOAL_SOURCES=5
-CONFIG_BT_CTLR_ISO_TX_BUFFERS=8
+CONFIG_BT_CTLR_ISO_TX_BUFFERS=1
 CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE=255
 
 CONFIG_BT_BUF_EVT_RX_SIZE=255
@@ -23,8 +23,9 @@ CONFIG_BT_CTLR_ASSERT_HANDLER=y
 CONFIG_BT_CTLR_DTM_HCI=n
 
 # Setup ISO Buffer
-CONFIG_BT_ISO_TX_BUF_COUNT=10
-CONFIG_BT_ISO_TX_MTU=251
+CONFIG_BT_ISO_TX_BUF_COUNT=1
+CONFIG_BT_CTLR_SDC_ISO_TX_PDU_BUFFER_PER_STREAM_COUNT=1
+CONFIG_BT_ISO_TX_MTU=140
 CONFIG_BT_ISO_RX_BUF_COUNT=10
 CONFIG_BT_ISO_RX_MTU=251