diff --git a/flow/designs/asap7/cva6/constraint.sdc b/flow/designs/asap7/cva6/constraint.sdc
index bb2840e946..38f49f4b75 100644
--- a/flow/designs/asap7/cva6/constraint.sdc
+++ b/flow/designs/asap7/cva6/constraint.sdc
@@ -3,7 +3,7 @@
 set clk_name main_clk
 set clk_port clk_i
 set clk_ports_list [list $clk_port]
-set clk_period 1000
+set clk_period 910
 set input_delay 0.46
 set output_delay 0.11
 create_clock [get_ports $clk_port] -name $clk_name -period $clk_period
diff --git a/flow/designs/asap7/cva6/rules-base.json b/flow/designs/asap7/cva6/rules-base.json
index 2b32104853..b1fc80d8f4 100644
--- a/flow/designs/asap7/cva6/rules-base.json
+++ b/flow/designs/asap7/cva6/rules-base.json
@@ -1,16 +1,16 @@
 {
     "synth__canonical_netlist__hash": {
-        "value": "8546daa9fab20173e2a1873f0268f52214d41e78",
+        "value": "758648883db7bf0ee7069e8b1f139b89925fdfe9",
         "compare": "==",
         "level": "warning"
     },
     "synth__netlist__hash": {
-        "value": "1f542e5a81cd52225b1d7480385ff67bb3c00b40",
+        "value": "97ba16f1079f58bdcf93fb2d7c77f84a324e8a99",
         "compare": "==",
         "level": "warning"
     },
     "synth__design__instance__area__stdcell": {
-        "value": 14100.0,
+        "value": 14000.0,
         "compare": "<="
     },
     "constraints__clocks__count": {
@@ -46,11 +46,11 @@
         "compare": ">="
     },
     "cts__timing__hold__ws": {
-        "value": -50.0,
+        "value": -45.5,
         "compare": ">="
     },
     "cts__timing__hold__tns": {
-        "value": -200.0,
+        "value": -182.0,
         "compare": ">="
     },
     "globalroute__antenna_diodes_count": {
@@ -62,15 +62,15 @@
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -200.0,
+        "value": -1480.0,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
-        "value": -50.0,
+        "value": -45.5,
         "compare": ">="
     },
     "globalroute__timing__hold__tns": {
-        "value": -200.0,
+        "value": -182.0,
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
@@ -94,15 +94,15 @@
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -200.0,
+        "value": -1330.0,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
-        "value": -50.0,
+        "value": -45.5,
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -200.0,
+        "value": -182.0,
         "compare": ">="
     },
     "finish__design__instance__area": {
diff --git a/flow/designs/ihp-sg13g2/i2c-gpio-expander/I2cDeviceCtrl/constraint.sdc b/flow/designs/ihp-sg13g2/i2c-gpio-expander/I2cDeviceCtrl/constraint.sdc
index ff4d0581c4..65eda3961d 100644
--- a/flow/designs/ihp-sg13g2/i2c-gpio-expander/I2cDeviceCtrl/constraint.sdc
+++ b/flow/designs/ihp-sg13g2/i2c-gpio-expander/I2cDeviceCtrl/constraint.sdc
@@ -4,9 +4,11 @@ set_max_fanout 8 [current_design]
 set_max_capacitance 0.5 [current_design]
 set_max_transition 3 [current_design]
 set_max_area 0
+set clk_period 10.0
 
-create_clock [get_ports clock] -name clock -period 20.0 -waveform {0 10.0}
-create_clock -name vclk -period 20.0
+create_clock [get_ports clock] -name clock -period $clk_period \
+  -waveform [list 0 [expr { $clk_period / 2.0 }]]
+create_clock -name vclk -period $clk_period
 set input_delay_value_clock 4.0
 set output_delay_value_clock 4.0
 set_clock_latency [expr $input_delay_value_clock * 0.5] [get_clocks {clock}]
diff --git a/flow/designs/ihp-sg13g2/i2c-gpio-expander/constraint.sdc b/flow/designs/ihp-sg13g2/i2c-gpio-expander/constraint.sdc
index f7230be7c1..fbc7f3b481 100644
--- a/flow/designs/ihp-sg13g2/i2c-gpio-expander/constraint.sdc
+++ b/flow/designs/ihp-sg13g2/i2c-gpio-expander/constraint.sdc
@@ -4,11 +4,13 @@ set_max_fanout 8 [current_design]
 set_max_capacitance 0.5 [current_design]
 set_max_transition 3 [current_design]
 set_max_area 0
+set clk_period 10.0
 
 set_ideal_network [get_pins sg13g2_IOPad_io_clock/p2c]
-create_clock [get_pins sg13g2_IOPad_io_clock/p2c] -name clk_core -period 20.0 -waveform {0 10.0}
+create_clock [get_pins sg13g2_IOPad_io_clock/p2c] -name clk_core -period $clk_period \
+  -waveform [list 0 [expr { $clk_period / 2.0 }]]
 set clk_core_io_name vclk_clk_core
-create_clock -name $clk_core_io_name -period 20.0
+create_clock -name $clk_core_io_name -period $clk_period
 set input_delay_value_clk_core 4.0
 set output_delay_value_clk_core 4.0
 set_clock_latency 0.480 [get_clocks clk_core]
diff --git a/flow/designs/ihp-sg13g2/i2c-gpio-expander/rules-base.json b/flow/designs/ihp-sg13g2/i2c-gpio-expander/rules-base.json
index 9d19822c1c..a9f1c28507 100644
--- a/flow/designs/ihp-sg13g2/i2c-gpio-expander/rules-base.json
+++ b/flow/designs/ihp-sg13g2/i2c-gpio-expander/rules-base.json
@@ -1,11 +1,11 @@
 {
     "synth__canonical_netlist__hash": {
-        "value": "66fec6fee76e4ead66050b0e535abf8f137c96a4",
+        "value": "09722ed7e143ceda685bf0922818e0ebf020a2aa",
         "compare": "==",
         "level": "warning"
     },
     "synth__netlist__hash": {
-        "value": "c9c049753309b3ba16e814e872c97d8544489abc",
+        "value": "1623b878eac2dbf9fb6c6b3ddc6965bd030ccfed",
         "compare": "==",
         "level": "warning"
     },
@@ -38,19 +38,19 @@
         "compare": "<="
     },
     "cts__timing__setup__ws": {
-        "value": -1.0,
+        "value": -2.56,
         "compare": ">="
     },
     "cts__timing__setup__tns": {
-        "value": -4.0,
+        "value": -7.76,
         "compare": ">="
     },
     "cts__timing__hold__ws": {
-        "value": -1.0,
+        "value": -0.5,
         "compare": ">="
     },
     "cts__timing__hold__tns": {
-        "value": -4.0,
+        "value": -2.0,
         "compare": ">="
     },
     "globalroute__antenna_diodes_count": {
@@ -58,19 +58,19 @@
         "compare": "<="
     },
     "globalroute__timing__setup__ws": {
-        "value": -1.0,
+        "value": -2.56,
         "compare": ">="
     },
     "globalroute__timing__setup__tns": {
-        "value": -4.0,
+        "value": -7.72,
         "compare": ">="
     },
     "globalroute__timing__hold__ws": {
-        "value": -1.0,
+        "value": -0.5,
         "compare": ">="
     },
     "globalroute__timing__hold__tns": {
-        "value": -4.0,
+        "value": -2.0,
         "compare": ">="
     },
     "detailedroute__route__wirelength": {
@@ -90,19 +90,19 @@
         "compare": "<="
     },
     "finish__timing__setup__ws": {
-        "value": -1.0,
+        "value": -2.55,
         "compare": ">="
     },
     "finish__timing__setup__tns": {
-        "value": -4.0,
+        "value": -7.53,
         "compare": ">="
     },
     "finish__timing__hold__ws": {
-        "value": -1.0,
+        "value": -0.5,
         "compare": ">="
     },
     "finish__timing__hold__tns": {
-        "value": -4.0,
+        "value": -2.0,
         "compare": ">="
     },
     "finish__design__instance__area": {