diff --git a/flow/designs/asap7/aes-block/config.mk b/flow/designs/asap7/aes-block/config.mk
index 60a0c336b1..fa3feb01ab 100644
--- a/flow/designs/asap7/aes-block/config.mk
+++ b/flow/designs/asap7/aes-block/config.mk
@@ -8,10 +8,9 @@ export SDC_FILE      = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.
 
 export ABC_AREA               = 1
 
-export CORE_UTILIZATION       = 40
+export CORE_UTILIZATION       = 47
 export CORE_ASPECT_RATIO      = 1
 export CORE_MARGIN            = 2
-export PLACE_DENSITY          = 0.53
 
 export BLOCKS ?= aes_rcon aes_sbox
 export SYNTH_HIERARCHICAL = 1
diff --git a/flow/designs/asap7/aes-block/rules-base.json b/flow/designs/asap7/aes-block/rules-base.json
index 0166f5aec5..6221ddb314 100644
--- a/flow/designs/asap7/aes-block/rules-base.json
+++ b/flow/designs/asap7/aes-block/rules-base.json
@@ -12,7 +12,7 @@
         "compare": "<="
     },
     "placeopt__design__instance__count__stdcell": {
-        "value": 10573,
+        "value": 10549,
         "compare": "<="
     },
     "detailedplace__design__violations": {
@@ -20,11 +20,11 @@
         "compare": "=="
     },
     "cts__design__instance__count__setup_buffer": {
-        "value": 919,
+        "value": 917,
         "compare": "<="
     },
     "cts__design__instance__count__hold_buffer": {
-        "value": 923,
+        "value": 917,
         "compare": "<="
     },
     "cts__timing__setup__ws": {
@@ -32,7 +32,7 @@
         "compare": ">="
     },
     "cts__timing__setup__tns": {
-        "value": -5920.0,
+        "value": -10300.0,
         "compare": ">="
     },
     "cts__timing__hold__ws": {
@@ -48,11 +48,11 @@
         "compare": "<="
     },
     "globalroute__timing__setup__ws": {
-        "value": -150.0,
+        "value": -175.0,
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -6750.0,
+        "value": -10600.0,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
@@ -64,7 +64,7 @@
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
-        "value": 52923,
+        "value": 50927,
         "compare": "<="
     },
     "detailedroute__route__drc_errors": {
@@ -84,7 +84,7 @@
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -3780.0,
+        "value": -6230.0,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
diff --git a/flow/designs/nangate45/swerv/config.mk b/flow/designs/nangate45/swerv/config.mk
index 6625aced49..31319f817f 100644
--- a/flow/designs/nangate45/swerv/config.mk
+++ b/flow/designs/nangate45/swerv/config.mk
@@ -4,7 +4,7 @@ export PLATFORM    = nangate45
 export VERILOG_FILES = $(DESIGN_HOME)/src/$(DESIGN_NAME)/swerv_wrapper.sv2v.v
 export SDC_FILE      = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NAME)/constraint.sdc
 
-export CORE_UTILIZATION = 40
+export CORE_UTILIZATION = 65
 export CORE_ASPECT_RATIO = 1
 export CORE_MARGIN = 5
 
diff --git a/flow/designs/nangate45/swerv/constraint.sdc b/flow/designs/nangate45/swerv/constraint.sdc
index ccaab11ddf..388a7027b0 100644
--- a/flow/designs/nangate45/swerv/constraint.sdc
+++ b/flow/designs/nangate45/swerv/constraint.sdc
@@ -2,7 +2,7 @@ current_design swerv
 
 set clk_name core_clock
 set clk_port_name clk
-set clk_period 2.0
+set clk_period 1.75
 set clk_io_pct 0.2
 
 set clk_port [get_ports $clk_port_name]
diff --git a/flow/designs/nangate45/swerv/rules-base.json b/flow/designs/nangate45/swerv/rules-base.json
index 89d210b90e..1ae2bf88c5 100644
--- a/flow/designs/nangate45/swerv/rules-base.json
+++ b/flow/designs/nangate45/swerv/rules-base.json
@@ -28,19 +28,19 @@
         "compare": "<="
     },
     "cts__timing__setup__ws": {
-        "value": -0.207,
+        "value": -0.387,
         "compare": ">="
     },
     "cts__timing__setup__tns": {
-        "value": -9.64,
+        "value": -233.0,
         "compare": ">="
     },
     "cts__timing__hold__ws": {
-        "value": -0.1,
+        "value": -0.0875,
         "compare": ">="
     },
     "cts__timing__hold__tns": {
-        "value": -0.4,
+        "value": -0.35,
         "compare": ">="
     },
     "globalroute__antenna_diodes_count": {
@@ -48,23 +48,23 @@
         "compare": "<="
     },
     "globalroute__timing__setup__ws": {
-        "value": -0.224,
+        "value": -0.416,
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -37.0,
+        "value": -305.0,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
-        "value": -0.1,
+        "value": -0.0875,
         "compare": ">="
     },
     "globalroute__timing__hold__tns": {
-        "value": -0.4,
+        "value": -0.35,
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
-        "value": 2799467,
+        "value": 2659376,
         "compare": "<="
     },
     "detailedroute__route__drc_errors": {
@@ -80,19 +80,19 @@
         "compare": "<="
     },
     "finish__timing__setup__ws": {
-        "value": -0.235,
+        "value": -0.398,
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -23.9,
+        "value": -234.0,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
-        "value": -0.1,
+        "value": -0.0875,
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -0.4,
+        "value": -0.35,
         "compare": ">="
     },
     "finish__design__instance__area": {
diff --git a/flow/designs/sky130hd/chameleon/config.mk b/flow/designs/sky130hd/chameleon/config.mk
index 0f4d32a6e2..d02447831b 100644
--- a/flow/designs/sky130hd/chameleon/config.mk
+++ b/flow/designs/sky130hd/chameleon/config.mk
@@ -29,8 +29,9 @@ export ABC_AREA = 1
 
 export SDC_FILE      = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
 
-export DIE_AREA   = 0 0 2920 3520
-export CORE_AREA  = 20 20 2900 3500
+export CORE_UTILIZATION       = 70
+export CORE_ASPECT_RATIO      = 1.3
+export CORE_MARGIN            = 2
 
 export chameleon_DIR = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NICKNAME)
 
@@ -44,7 +45,7 @@ export ADDITIONAL_LEFS  = $(chameleon_DIR)/lef/apb_sys_0.lef \
                           $(chameleon_DIR)/lef/DMC_32x16HC.lef \
                           $(chameleon_DIR)/lef/ibex_wrapper.lef
 
-export MACRO_PLACEMENT_TCL = $(chameleon_DIR)/macro_placement.tcl
+#export MACRO_PLACEMENT_TCL = $(chameleon_DIR)/macro_placement.tcl
 
 export FP_PDN_RAIL_WIDTH  = 0.48
 export FP_PDN_RAIL_OFFSET = 0
diff --git a/flow/designs/sky130hd/chameleon/constraint.sdc b/flow/designs/sky130hd/chameleon/constraint.sdc
index d3a0d6df47..d37cfd7533 100644
--- a/flow/designs/sky130hd/chameleon/constraint.sdc
+++ b/flow/designs/sky130hd/chameleon/constraint.sdc
@@ -1,6 +1,6 @@
 set clk_name core_clock
 set clk_port_name HCLK
-set clk_period 7.0
+set clk_period 3
 set clk_io_pct 0.1
 
 set clk_port [get_ports $clk_port_name]
diff --git a/flow/designs/sky130hd/chameleon/macro_placement.tcl b/flow/designs/sky130hd/chameleon/macro_placement.tcl
deleted file mode 100644
index dbbe724cc3..0000000000
--- a/flow/designs/sky130hd/chameleon/macro_placement.tcl
+++ /dev/null
@@ -1,6 +0,0 @@
-place_macro -macro_name {RAM.genblk1\[0\].RAM} -location {200 150} -orientation R0
-place_macro -macro_name {RAM.genblk1\[1\].RAM} -location {1600 150} -orientation R0
-place_macro -macro_name {RAM.genblk1\[2\].RAM} -location {200 1950} -orientation R180
-place_macro -macro_name {ahb_sys_0_uut.S0.CACHE} -location {2100 2650} -orientation R0
-place_macro -macro_name {ahb_sys_0_uut.apb_sys_inst_0} -location {1470 2643} -orientation R0
-place_macro -macro_name {ibex_core} -location {2150 1700} -orientation R0
diff --git a/flow/designs/sky130hd/chameleon/rules-base.json b/flow/designs/sky130hd/chameleon/rules-base.json
index 67ebb567af..7319a6e9a2 100644
--- a/flow/designs/sky130hd/chameleon/rules-base.json
+++ b/flow/designs/sky130hd/chameleon/rules-base.json
@@ -8,11 +8,11 @@
         "compare": "=="
     },
     "placeopt__design__instance__area": {
-        "value": 6528032,
+        "value": 6489461,
         "compare": "<="
     },
     "placeopt__design__instance__count__stdcell": {
-        "value": 69712,
+        "value": 38946,
         "compare": "<="
     },
     "detailedplace__design__violations": {
@@ -20,51 +20,51 @@
         "compare": "=="
     },
     "cts__design__instance__count__setup_buffer": {
-        "value": 6062,
+        "value": 3387,
         "compare": "<="
     },
     "cts__design__instance__count__hold_buffer": {
-        "value": 6062,
+        "value": 3387,
         "compare": "<="
     },
     "cts__timing__setup__ws": {
-        "value": -0.35,
+        "value": -3.07,
         "compare": ">="
     },
     "cts__timing__setup__tns": {
-        "value": -1.4,
+        "value": -13.2,
         "compare": ">="
     },
     "cts__timing__hold__ws": {
-        "value": -0.35,
+        "value": -0.15,
         "compare": ">="
     },
     "cts__timing__hold__tns": {
-        "value": -1.4,
+        "value": -0.6,
         "compare": ">="
     },
     "globalroute__antenna_diodes_count": {
-        "value": 154,
+        "value": 100,
         "compare": "<="
     },
     "globalroute__timing__setup__ws": {
-        "value": -0.35,
+        "value": -2.85,
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -1.4,
+        "value": -9.98,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
-        "value": -0.35,
+        "value": -0.15,
         "compare": ">="
     },
     "globalroute__timing__hold__tns": {
-        "value": -1.4,
+        "value": -0.6,
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
-        "value": 771372,
+        "value": 724825,
         "compare": "<="
     },
     "detailedroute__route__drc_errors": {
@@ -80,23 +80,23 @@
         "compare": "<="
     },
     "finish__timing__setup__ws": {
-        "value": -0.35,
+        "value": -2.78,
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -1.4,
+        "value": -9.44,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
-        "value": -0.35,
+        "value": -0.15,
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -1.4,
+        "value": -0.6,
         "compare": ">="
     },
     "finish__design__instance__area": {
-        "value": 6531862,
+        "value": 6493440,
         "compare": "<="
     }
 }
\ No newline at end of file
diff --git a/flow/designs/sky130hd/jpeg/config.mk b/flow/designs/sky130hd/jpeg/config.mk
index 02964073ba..d37a2e56ac 100644
--- a/flow/designs/sky130hd/jpeg/config.mk
+++ b/flow/designs/sky130hd/jpeg/config.mk
@@ -6,7 +6,7 @@ export VERILOG_FILES = $(sort $(wildcard $(DESIGN_HOME)/src/$(DESIGN_NICKNAME)/*
 export VERILOG_INCLUDE_DIRS = $(DESIGN_HOME)/src/$(DESIGN_NICKNAME)/include
 export SDC_FILE      = $(DESIGN_HOME)/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
 
-export CORE_UTILIZATION = 50
+export CORE_UTILIZATION = 55
 export PLACE_DENSITY_LB_ADDON = 0.15
 export TNS_END_PERCENT = 100
 
diff --git a/flow/designs/sky130hd/jpeg/constraint.sdc b/flow/designs/sky130hd/jpeg/constraint.sdc
index 5d9b007f0e..99efc05739 100644
--- a/flow/designs/sky130hd/jpeg/constraint.sdc
+++ b/flow/designs/sky130hd/jpeg/constraint.sdc
@@ -2,7 +2,7 @@ current_design jpeg_encoder
 
 set clk_name clk
 set clk_port_name clk
-set clk_period 5.5
+set clk_period 5
 set clk_io_pct 0.2
 
 set clk_port [get_ports $clk_port_name]
diff --git a/flow/designs/sky130hd/jpeg/rules-base.json b/flow/designs/sky130hd/jpeg/rules-base.json
index 5221725175..0c692ce31d 100644
--- a/flow/designs/sky130hd/jpeg/rules-base.json
+++ b/flow/designs/sky130hd/jpeg/rules-base.json
@@ -28,19 +28,19 @@
         "compare": "<="
     },
     "cts__timing__setup__ws": {
-        "value": -0.309,
+        "value": -0.621,
         "compare": ">="
     },
     "cts__timing__setup__tns": {
-        "value": -1.19,
+        "value": -63.2,
         "compare": ">="
     },
     "cts__timing__hold__ws": {
-        "value": -0.275,
+        "value": -0.25,
         "compare": ">="
     },
     "cts__timing__hold__tns": {
-        "value": -1.1,
+        "value": -1.0,
         "compare": ">="
     },
     "globalroute__antenna_diodes_count": {
@@ -48,19 +48,19 @@
         "compare": "<="
     },
     "globalroute__timing__setup__ws": {
-        "value": -0.314,
+        "value": -0.9,
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -7.16,
+        "value": -157.0,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
-        "value": -0.275,
+        "value": -0.25,
         "compare": ">="
     },
     "globalroute__timing__hold__tns": {
-        "value": -1.1,
+        "value": -1.0,
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
@@ -76,23 +76,23 @@
         "compare": "<="
     },
     "detailedroute__antenna_diodes_count": {
-        "value": 131,
+        "value": 100,
         "compare": "<="
     },
     "finish__timing__setup__ws": {
-        "value": -0.275,
+        "value": -0.603,
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -1.1,
+        "value": -58.3,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
-        "value": -0.275,
+        "value": -0.25,
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -1.1,
+        "value": -1.0,
         "compare": ">="
     },
     "finish__design__instance__area": {