diff --git a/flow/designs/rapidus2hp/cva6/config.mk b/flow/designs/rapidus2hp/cva6/config.mk
index ce52828b2c..eaf8b2c404 100644
--- a/flow/designs/rapidus2hp/cva6/config.mk
+++ b/flow/designs/rapidus2hp/cva6/config.mk
@@ -102,7 +102,12 @@ ifeq ($(SYNTH_HDL_FRONTEND),verific)
 else
   # Reduce the amount of resizing done between GPL and DPL
   export EARLY_SIZING_CAP_RATIO = 6
-  export CORE_UTILIZATION       = 55
+  ifeq ($(TRACK_OPTION),6T)
+    # Decrease the utilization so that the tall macros fit
+    export CORE_UTILIZATION       = 50
+  else
+    export CORE_UTILIZATION       = 55
+  endif
 endif
 
 export CORE_MARGIN            = 2
diff --git a/flow/designs/rapidus2hp/hercules_is_int/config.mk b/flow/designs/rapidus2hp/hercules_is_int/config.mk
index a9486b6323..0bf81a9653 100644
--- a/flow/designs/rapidus2hp/hercules_is_int/config.mk
+++ b/flow/designs/rapidus2hp/hercules_is_int/config.mk
@@ -22,7 +22,11 @@ export SDC_FILE               = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NAME)/prects
 export SYNTH_HDL_FRONTEND  = slang
 export SYNTH_HIERARCHICAL ?= 0
 
-export CORE_UTILIZATION       = 35
+ifeq ($(TRACK_OPTION), 6T)
+  export CORE_UTILIZATION       = 30
+else
+  export CORE_UTILIZATION       = 35
+endif
 
 export CORE_MARGIN            = 2
 export MACRO_PLACE_HALO       = 2 2