diff --git a/Systems/a320-adr.xml b/Systems/a320-adr.xml
index 20bcc96b..4d40a2d9 100644
--- a/Systems/a320-adr.xml
+++ b/Systems/a320-adr.xml
@@ -4,7 +4,7 @@
 
 <system name="A320: ADR">
 
-    <channel name="ADR Inputs">
+    <channel name="ADR Inputs" execrate="2">
 		
 		<fcs_function name="aero/alpha-deg-corrected">
 			<function>
@@ -143,7 +143,7 @@
 		
     </channel>
 	
-	<channel name="ADR Computation">
+	<channel name="ADR Computation" execrate="2">
 	
 		<sensor name="/systems/navigation/adr/computation/baro-alt-1-capt">
 			<input>/instrumentation/altimeter[0]/pressure-alt-ft</input>
@@ -770,7 +770,7 @@
 		
 	</channel>
 	
-	<channel name="ADR Output"> <!-- todo - need lowpass? -->
+	<channel name="ADR Output" execrate="2"> <!-- todo - need lowpass? -->
 	
 		<pure_gain name="/systems/navigation/adr/output/aoa-1">
 			<input>/systems/navigation/probes/aoa-1</input>
diff --git a/Systems/a320-aircond.xml b/Systems/a320-aircond.xml
index 1e5c58f3..0f74d621 100644
--- a/Systems/a320-aircond.xml
+++ b/Systems/a320-aircond.xml
@@ -5,7 +5,7 @@
 	<property value="0">/systems/air-conditioning/packs/pack-flow-1-norm</property>
 	<property value="0">/systems/air-conditioning/packs/pack-flow-2-norm</property>
 	
-	<channel name="Valves">
+	<channel name="Valves" execrate="8">
 	
 		<switch name="/systems/air-conditioning/valves/flow-control-valve-1-cmd">
 			<default value="0"/>
@@ -100,7 +100,7 @@
 		
 	</channel>
 	
-	<channel name="Packs">
+	<channel name="Packs" execrate="8">
 		
 		<switch name="/systems/air-conditioning/packs/single-pack">
 			<default value="0"/>
@@ -727,11 +727,11 @@
 		</actuator>
 	</channel>
 	
-	<channel name="Recirculation">
+	<channel name="Recirculation" execrate="8">
 		
 	</channel>
 	
-	<channel name="Mass flow">
+	<channel name="Mass flow" execrate="8">
 		
 		<fcs_function name="/systems/air-conditioning/mass-flow-fresh-kg_s">
 			<function>
@@ -798,7 +798,7 @@
 		
 	</channel>
 	
-	<channel name="Warnings">
+	<channel name="Warnings" execrate="8">
 	
 		<switch name="/systems/air-conditioning/warnings/pack-1-ovht">
 			<default value="0"/>
diff --git a/Systems/a320-apu.xml b/Systems/a320-apu.xml
index 30f2e3f2..42691717 100644
--- a/Systems/a320-apu.xml
+++ b/Systems/a320-apu.xml
@@ -4,7 +4,7 @@
 
 <system name="A320: APU">
 
-    <channel name="APU">
+    <channel name="APU" execrate="8">
         <!-- bleed 1.8 kg / sec @ 42 psig -->
         <!-- fuel 148 kg/hr -->
 		<!-- generator 24034 rpm, 10129 rpm fuel ctl, 32045 rpm starter, 51965 rpm cooling, 4137rpm oil pump -->
diff --git a/Systems/a320-engine-fire.xml b/Systems/a320-engine-fire.xml
index 8d173bb8..9778bf50 100644
--- a/Systems/a320-engine-fire.xml
+++ b/Systems/a320-engine-fire.xml
@@ -2,7 +2,7 @@
 
 <system name="A320: Engine Fire">
 
-	<channel name="Engine Fire">
+	<channel name="Engine Fire" execrate="8">
 		<fcs_function name="enginefire1">
               <function>
 				<sum>
@@ -73,7 +73,7 @@
         </fcs_function>
 	</channel>
 	
-	<channel name="Cargo Fire">
+	<channel name="Cargo Fire" execrate="8">
 		<fcs_function name="fwdfire">
               <function>
 				<sum>
diff --git a/Systems/a320-fuel.xml b/Systems/a320-fuel.xml
index 2653b3e7..95938e57 100644
--- a/Systems/a320-fuel.xml
+++ b/Systems/a320-fuel.xml
@@ -4,7 +4,7 @@
 
 <system name="A320: Fuel:">
 	
-	<channel name="Fuel Pumps and Valves">
+	<channel name="Fuel Pumps and Valves" execrate="8">
 		<!-- Pumps -->
 		
 		<switch name="/systems/fuel/pumps/apu-operate"> <!-- DC HOT 1 ? -->
@@ -408,7 +408,7 @@
 		</actuator>
 	</channel>
 	
-	<channel name="Flow Rates">
+	<channel name="Flow Rates" execrate="2">
 	
 		<switch name="/systems/fuel/feed-left-inner">
 			<default value="0"/>
@@ -792,7 +792,7 @@
 		</summer>
 	</channel>
 	
-	<channel name="Warnings">
+	<channel name="Warnings" execrate="8">
 		
 		<summer name="/systems/fuel/quantity/left-wing-kg">
 			<input>/consumables/fuel/tank[0]/level-kg</input>
diff --git a/Systems/a320-fwc-phases.xml b/Systems/a320-fwc-phases.xml
index 199416f6..33d5a6b1 100644
--- a/Systems/a320-fwc-phases.xml
+++ b/Systems/a320-fwc-phases.xml
@@ -14,7 +14,7 @@
         </actuator>
 	</channel>
 	
-	<channel name="FWC Phase Logic and Switches">
+	<channel name="FWC Phase Logic and Switches" execrate="4">
 		
 		<switch name="/ECAM/flipflop/speed-gt-80-set">
 			<default value="0"/>
diff --git a/Systems/a320-lights.xml b/Systems/a320-lights.xml
index 880ff302..6ae97bbd 100644
--- a/Systems/a320-lights.xml
+++ b/Systems/a320-lights.xml
@@ -2,7 +2,7 @@
 
 <system name="A320: Lights">
 
-	<channel name="Lights">
+	<channel name="Interior Lights" execrate="8">
 		<switch name="/controls/lighting/reading-light-tied">
 			<default value="0" />
 			<test value="/controls/lighting/main-flood-knb">
@@ -68,7 +68,7 @@
 		</switch>
 	</channel>
 	
-	<channel name="Exterior Lights">
+	<channel name="Exterior Lights" execrate="8">
 		
 		<switch name="/sim/model/lights/nose-lights">
 			<default value="0"/>
diff --git a/Systems/a320-pneumatic.xml b/Systems/a320-pneumatic.xml
index ce247074..89a177c4 100644
--- a/Systems/a320-pneumatic.xml
+++ b/Systems/a320-pneumatic.xml
@@ -1,7 +1,7 @@
 <!-- Copyright (c) 2019 Jonathan Redpath (legoboyvdlp) -->
 
 <system name="A320: Pneumatic">
-	<channel name="Startup">
+	<channel name="Startup" execrate="8">
 		
 		<switch name="/systems/startup-power-valves">
 			<default value="0"/>
@@ -12,7 +12,7 @@
 		
 	</channel>
 	
-	<channel name="Valves">
+	<channel name="Valves" execrate="8"> 
 	
 		<!-- apu -->
 		<switch name="/systems/pneumatics/valves/apu-bleed-valve-cmd">
@@ -604,7 +604,7 @@
 		</actuator>
 	</channel>
 	
-	<channel name="Source PSI">
+	<channel name="Source PSI" execrate="8">
 	
         <fcs_function name="/systems/pneumatics/source/apu-psi">
             <function>
@@ -749,7 +749,7 @@
 		
 	</channel>
 	
-	<channel name="System PSI">
+	<channel name="System PSI" execrate="8">
 	
 		<fcs_function name="/systems/pneumatics/psi/engine-1-upstream-src">
 			<function>
@@ -924,7 +924,7 @@
 		
 	</channel>
 	
-	<channel name="Precooler Left" execute="/systems/pneumatics/indicating/bmc1-working"> <!-- These values come from BMC, so makes sense to not have them when BMC lacks power -->
+	<channel name="Precooler Left" execute="/systems/pneumatics/indicating/bmc1-working"  execrate="8"> <!-- These values come from BMC, so makes sense to not have them when BMC lacks power -->
 	
 		<fcs_function name="/systems/pneumatics/precooler/calc/temp-1">
 			<function>
@@ -1037,7 +1037,7 @@
 		</switch>
 	</channel>
 	 
-	<channel name="Precooler Right" execute="/systems/pneumatics/indicating/bmc2-working">  <!-- These values come from BMC, so makes sense to not have them when BMC lacks power -->
+	<channel name="Precooler Right" execute="/systems/pneumatics/indicating/bmc2-working" execrate="8">  <!-- These values come from BMC, so makes sense to not have them when BMC lacks power -->
 		
 		<fcs_function name="/systems/pneumatics/precooler/calc/temp-2">
 			<function>
@@ -1150,7 +1150,7 @@
 		</switch>
 	</channel>
 	
-	<channel name="ECAM">
+	<channel name="ECAM" execrate="8">
 		
 		<switch name="/systems/pneumatics/indicating/bmc1-working">
 			<default value="0"/>
diff --git a/Systems/a320-spoiler.xml b/Systems/a320-spoiler.xml
index 889dab98..562514a6 100644
--- a/Systems/a320-spoiler.xml
+++ b/Systems/a320-spoiler.xml
@@ -6,7 +6,7 @@
 	
 	<property value="0">hydraulics/spoiler-l2/main-cmd-feedback</property>
 	
-	<channel name="Spoiler Logic">
+	<channel name="Spoiler Logic" execrate="2">
 		
 		<switch name="spoilers/main-gear-or">
 			<default value="0"/>