diff --git a/app/boards/intel_adsp_ace30_ptl.conf b/app/boards/intel_adsp_ace30_ptl.conf
index 6697f8d5523a..43f718981453 100644
--- a/app/boards/intel_adsp_ace30_ptl.conf
+++ b/app/boards/intel_adsp_ace30_ptl.conf
@@ -60,7 +60,9 @@ CONFIG_DMA_DW_LLI_POOL_SIZE=50
 CONFIG_MEMORY_WIN_2_SIZE=12288
 CONFIG_MM_DRV_INTEL_ADSP_TLB_REMAP_UNUSED_RAM=y
 CONFIG_MM_DRV_INTEL_VIRTUAL_REGION_COUNT=3
-CONFIG_XTENSA_MMU_NUM_L2_TABLES=128
+# note: notable impact to memory use, setting of 50
+#       tuned for configs with upto 2 isolated DP modules
+CONFIG_XTENSA_MMU_NUM_L2_TABLES=50
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=12000
 
 # Zephyr / power settings
diff --git a/app/overlays/ptl/ll_userspace_overlay.conf b/app/overlays/ptl/ll_userspace_overlay.conf
index 28a6e4ea044b..8b21815e51b9 100644
--- a/app/overlays/ptl/ll_userspace_overlay.conf
+++ b/app/overlays/ptl/ll_userspace_overlay.conf
@@ -32,6 +32,10 @@ CONFIG_CROSS_CORE_STREAM=n
 CONFIG_INTEL_ADSP_MIC_PRIVACY=n
 CONFIG_XRUN_NOTIFICATIONS_ENABLE=n
 
+# increase L2 allocation for LL userspace and
+# max two isolated DP modules
+CONFIG_XTENSA_MMU_NUM_L2_TABLES=70
+
 # Extend the shared LL user-space heap to 512KiB. This
 # is current maximum for PTL builds with virtual heap
 # enabled and uses the vmh allocation intended for KBP.