diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index d70cc2c0b..8326d7b82 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -8251,7 +8251,7 @@ scriptwait:
 			{
 				if (activator != NULL)
 				{
-					activator->SetAngle(STACK(1) << 16);
+					activator->SetAngle(STACK(1) << 16, false);
 				}
 			}
 			else
@@ -8261,7 +8261,7 @@ scriptwait:
 
 				while ( (actor = iterator.Next ()) )
 				{
-					actor->SetAngle(STACK(1) << 16);
+					actor->SetAngle(STACK(1) << 16, false);
 				}
 			}
 			sp -= 2;
@@ -8272,7 +8272,7 @@ scriptwait:
 			{
 				if (activator != NULL)
 				{
-					activator->SetPitch(STACK(1) << 16);
+					activator->SetPitch(STACK(1) << 16, false);
 				}
 			}
 			else
@@ -8282,7 +8282,7 @@ scriptwait:
 
 				while ( (actor = iterator.Next ()) )
 				{
-					actor->SetPitch(STACK(1) << 16);
+					actor->SetPitch(STACK(1) << 16, false);
 				}
 			}
 			sp -= 2;
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 69d4203fe..2bcae99b0 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -2962,24 +2962,24 @@ void AActor::SetShade (int r, int g, int b)
 	fillcolor = MAKEARGB(ColorMatcher.Pick (r, g, b), r, g, b);
 }
 
-void AActor::SetPitch(int p)
+void AActor::SetPitch(int p, bool interpolate)
 {
 	if (p != pitch)
 	{
 		pitch = p;
-		if (player != NULL)
+		if (player != NULL && interpolate)
 		{
 			player->cheats |= CF_INTERPVIEW;
 		}
 	}
 }
 
-void AActor::SetAngle(angle_t ang)
+void AActor::SetAngle(angle_t ang, bool interpolate)
 {
 	if (ang != angle)
 	{
 		angle = ang;
-		if (player != NULL)
+		if (player != NULL && interpolate)
 		{
 			player->cheats |= CF_INTERPVIEW;
 		}
diff --git a/src/thingdef/thingdef_codeptr.cpp b/src/thingdef/thingdef_codeptr.cpp
index d48b18a2a..251a5de91 100644
--- a/src/thingdef/thingdef_codeptr.cpp
+++ b/src/thingdef/thingdef_codeptr.cpp
@@ -3930,12 +3930,19 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_MonsterRefire)
 // Set actor's angle (in degrees).
 //
 //===========================================================================
+enum
+{
+	SPF_FORCECLAMP = 1,	// players always clamp
+	SPF_INTERPOLATE = 2,
+};
+
 
 DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SetAngle)
 {
-	ACTION_PARAM_START(1);
+	ACTION_PARAM_START(2);
 	ACTION_PARAM_ANGLE(angle, 0);
-	self->SetAngle(angle);
+	ACTION_PARAM_INT(flags, 1)
+	self->SetAngle(angle, !!(flags & SPF_INTERPOLATE));
 }
 
 //===========================================================================
@@ -3946,11 +3953,6 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SetAngle)
 //
 //===========================================================================
 
-enum
-{
-	SPF_FORCECLAMP = 1,	// players always clamp
-};
-
 DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SetPitch)
 {
 	ACTION_PARAM_START(2);
@@ -3973,7 +3975,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_SetPitch)
 		}
 		pitch = clamp<int>(pitch, min, max);
 	}
-	self->SetPitch(pitch);
+	self->SetPitch(pitch, !!(flags & SPF_INTERPOLATE));
 }
 
 //===========================================================================
diff --git a/wadsrc/static/actors/actor.txt b/wadsrc/static/actors/actor.txt
index 73119c941..1eb00440c 100644
--- a/wadsrc/static/actors/actor.txt
+++ b/wadsrc/static/actors/actor.txt
@@ -289,7 +289,7 @@ ACTOR Actor native //: Thinker
 	action native A_DropWeaponPieces(class<Actor> p1, class<Actor> p2, class<Actor> p3);
 	action native A_PigPain ();
 	action native A_MonsterRefire(int chance, state label);
-	action native A_SetAngle(float angle = 0);
+	action native A_SetAngle(float angle = 0, int flags = 0);
 	action native A_SetPitch(float pitch, int flags = 0);
 	action native A_ScaleVelocity(float scale);
 	action native A_ChangeVelocity(float x = 0, float y = 0, float z = 0, int flags = 0);
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index dee498b6a..b252e3194 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -304,8 +304,9 @@ Const Int WARPF_STOP = 0x80;
 Const Int WARPF_TOFLOOR = 0x100;
 Const Int WARPF_TESTONLY = 0x200;
 
-// flags for A_SetPitch
+// flags for A_SetPitch/SetAngle
 const int SPF_FORCECLAMP = 1;
+const int SPF_INTERPOLATE = 2;
 
 
 // flags for A_CheckLOF