diff --git a/language.version b/language.version
index 65f7be091..db65d44d3 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r191 \cu(Thu 21 Jul 12:50:22 CEST 2022)\c-";
-SWWM_SHORTVER="\cw1.3pre r191 \cu(2022-07-21 12:50:22)\c-";
+SWWM_MODVER="\cyDEMOLITIONIST \cw1.3pre r192 \cu(Thu 21 Jul 13:25:02 CEST 2022)\c-";
+SWWM_SHORTVER="\cw1.3pre r192 \cu(2022-07-21 13:25:02)\c-";
diff --git a/zscript/swwm_common.zsc b/zscript/swwm_common.zsc
index a2282c015..e710e78e3 100644
--- a/zscript/swwm_common.zsc
+++ b/zscript/swwm_common.zsc
@@ -228,7 +228,7 @@ Class SmoothLinearValueInterpolator
 	}
 	double GetValue( double fractic = 1. )
 	{
-		return SWWMUtility.Lerp(oldval,val,fractic);
+		return (val~==oldval)?val:SWWMUtility.Lerp(oldval,val,fractic);
 	}
 }
 Class SmoothDynamicValueInterpolator
@@ -261,6 +261,6 @@ Class SmoothDynamicValueInterpolator
 	}
 	double GetValue( double fractic = 1. )
 	{
-		return SWWMUtility.Lerp(oldval,val,fractic);
+		return (val~==oldval)?val:SWWMUtility.Lerp(oldval,val,fractic);
 	}
 }