diff --git a/src/d_main.cpp b/src/d_main.cpp
index 2853cceb3..65458d7a9 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -754,9 +754,15 @@ void D_Display ()
 				Level->HasDynamicLights = !!level.lights;
 			}
 			else Level->HasDynamicLights = false;	// lights are off so effectively we have none.
+			Level->interpolator.DoInterpolations(I_GetTimeFrac());
 		}
-		
 		viewsec = screen->RenderView(&players[consoleplayer]);
+
+		for (auto Level : AllLevels())
+		{
+			Level->interpolator.RestoreInterpolations();
+		}
+
 		screen->Begin2D();
 		screen->DrawBlend(viewsec);
 		if (automapactive)
diff --git a/src/dobjgc.cpp b/src/dobjgc.cpp
index 169baf32c..5f0a995c0 100644
--- a/src/dobjgc.cpp
+++ b/src/dobjgc.cpp
@@ -331,7 +331,6 @@ static void MarkRoot()
 		SectorMarker->SecNum = 0;
 	}
 	Mark(SectorMarker);
-	Mark(interpolator.Head);
 	// Mark bot stuff.
 	Mark(bglobal.firstthing);
 	Mark(bglobal.body1);
diff --git a/src/g_level.cpp b/src/g_level.cpp
index 581ff9b34..51367df8e 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1983,6 +1983,7 @@ void FLevelLocals::Mark()
 	GC::Mark(FraggleScriptThinker);
 	GC::Mark(ACSThinker);
 	GC::Mark(automap);
+	GC::Mark(interpolator.Head);
 	canvasTextureInfo.Mark();
 	for (auto &c : CorpseQueue)
 	{
diff --git a/src/g_levellocals.h b/src/g_levellocals.h
index f95b38f5c..38d424868 100644
--- a/src/g_levellocals.h
+++ b/src/g_levellocals.h
@@ -50,6 +50,7 @@
 #include "p_destructible.h"
 #include "r_data/r_sections.h"
 #include "r_data/r_canvastexture.h"
+#include "r_data/r_interpolate.h"
 
 //============================================================================
 //
@@ -442,6 +443,7 @@ public:
 	FString		F1Pic;
 	EMapType	maptype;
 	FTagManager tagManager;
+	FInterpolator interpolator;
 
 	uint64_t	ShaderStartTime = 0;	// tell the shader system when we started the level (forces a timer restart)
 
diff --git a/src/gl/renderer/gl_scene.cpp b/src/gl/renderer/gl_scene.cpp
index 52c461288..8e6475c96 100644
--- a/src/gl/renderer/gl_scene.cpp
+++ b/src/gl/renderer/gl_scene.cpp
@@ -218,7 +218,6 @@ sector_t * FGLRenderer::RenderViewpoint (FRenderViewpoint &mainvp, AActor * came
 			mBuffers->BlitToEyeTexture(eye_ix);
 	}
 
-	interpolator.RestoreInterpolations ();
 	return mainvp.sector;
 }
 
diff --git a/src/p_saveg.cpp b/src/p_saveg.cpp
index a1d68b235..593aacb38 100644
--- a/src/p_saveg.cpp
+++ b/src/p_saveg.cpp
@@ -962,9 +962,10 @@ void FLevelLocals::Serialize(FSerializer &arc, bool hubload)
 		("spotstate", SpotState)
 		("fragglethinker", FraggleScriptThinker)
 		("acsthinker", ACSThinker)
-        ("impactdecalcount", ImpactDecalCount)
+		("impactdecalcount", ImpactDecalCount)
 		("scrolls", Scrolls)
-		("automap", automap);
+		("automap", automap)
+		("interpolator", interpolator);
 
 
 	// Hub transitions must keep the current total time
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 405892c35..bef044331 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -288,6 +288,7 @@ void FLevelLocals::ClearLevelData()
 	}
 	ClearPortals();
 
+	interpolator.ClearInterpolations();	// [RH] Nothing to interpolate on a fresh level.
 	tagManager.Clear();
 	ClearTIDHashes();
 	Behaviors.UnloadModules();
@@ -350,7 +351,6 @@ void P_FreeLevelData ()
 	R_FreePastViewers();
 	P_ClearUDMFKeys();
 
-	interpolator.ClearInterpolations();	// [RH] Nothing to interpolate on a fresh level.
 	SN_StopAllSequences ();
 	DThinker::DestroyAllThinkers ();
 
diff --git a/src/p_tick.cpp b/src/p_tick.cpp
index 562184edb..1fc66dda2 100644
--- a/src/p_tick.cpp
+++ b/src/p_tick.cpp
@@ -75,7 +75,10 @@ void P_Ticker (void)
 {
 	int i;
 
-	interpolator.UpdateInterpolations ();
+	for (auto Level : AllLevels())
+	{
+		Level->interpolator.UpdateInterpolations();
+	}
 	r_NoInterpolate = true;
 
 	if (!demoplayback)
diff --git a/src/polyrenderer/poly_renderer.cpp b/src/polyrenderer/poly_renderer.cpp
index 87642d831..338def63a 100644
--- a/src/polyrenderer/poly_renderer.cpp
+++ b/src/polyrenderer/poly_renderer.cpp
@@ -188,7 +188,6 @@ void PolyRenderer::RenderActorView(AActor *actor, bool dontmaplines)
 
 	if (Viewpoint.camera)
 		Viewpoint.camera->renderflags = savedflags;
-	interpolator.RestoreInterpolations ();
 	
 	NetUpdate();
 }
diff --git a/src/r_data/r_interpolate.cpp b/src/r_data/r_interpolate.cpp
index 70cf09393..b3a8e08b2 100644
--- a/src/r_data/r_interpolate.cpp
+++ b/src/r_data/r_interpolate.cpp
@@ -39,6 +39,7 @@
 #include "p_local.h"
 #include "po_man.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 //==========================================================================
 //
@@ -312,6 +313,16 @@ void FInterpolator::ClearInterpolations()
 	}
 }
 
+FSerializer &Serialize(FSerializer &arc, const char *key, FInterpolator &rs, FInterpolator *def)
+{
+	if (arc.BeginObject(key))
+	{
+		arc("head", rs.Head)
+			("count", rs.count)
+			.EndObject();
+	}
+	return arc;
+}
 
 //==========================================================================
 //
@@ -379,10 +390,6 @@ void DInterpolation::Serialize(FSerializer &arc)
 {
 	Super::Serialize(arc);
 	arc("refcount", refcount);
-	if (arc.isReading())
-	{
-		interpolator.AddInterpolation(this);
-	}
 }
 
 //==========================================================================
@@ -408,7 +415,7 @@ DSectorPlaneInterpolation::DSectorPlaneInterpolation(sector_t *_sector, bool _pl
 		P_Start3dMidtexInterpolations(attached, sector, ceiling);
 		P_StartLinkedSectorInterpolations(attached, sector, ceiling);
 	}
-	interpolator.AddInterpolation(this);
+	sector->Level->interpolator.AddInterpolation(this);
 }
 
 //==========================================================================
@@ -567,7 +574,7 @@ DSectorScrollInterpolation::DSectorScrollInterpolation(sector_t *_sector, bool _
 	sector = _sector;
 	ceiling = _plane;
 	UpdateInterpolation ();
-	interpolator.AddInterpolation(this);
+	sector->Level->interpolator.AddInterpolation(this);
 }
 
 //==========================================================================
@@ -672,7 +679,7 @@ DWallScrollInterpolation::DWallScrollInterpolation(side_t *_side, int _part)
 	side = _side;
 	part = _part;
 	UpdateInterpolation ();
-	interpolator.AddInterpolation(this);
+	side->GetLevel()->interpolator.AddInterpolation(this);
 }
 
 //==========================================================================
@@ -770,7 +777,7 @@ DPolyobjInterpolation::DPolyobjInterpolation(FPolyObj *po)
 	oldverts.Resize(po->Vertices.Size() << 1);
 	bakverts.Resize(po->Vertices.Size() << 1);
 	UpdateInterpolation ();
-	interpolator.AddInterpolation(this);
+	po->Level->interpolator.AddInterpolation(this);
 }
 
 //==========================================================================
diff --git a/src/r_data/r_interpolate.h b/src/r_data/r_interpolate.h
index dabfa3a1e..0696bf85f 100644
--- a/src/r_data/r_interpolate.h
+++ b/src/r_data/r_interpolate.h
@@ -43,19 +43,13 @@ public:
 
 struct FInterpolator
 {
-	TObjPtr<DInterpolation*> Head;
-	bool didInterp;
-	int count;
+	TObjPtr<DInterpolation*> Head = nullptr;
+	bool didInterp = false;
+	int count = 0;
 
 	int CountInterpolations ();
 
 public:
-	FInterpolator()
-	{
-		Head = nullptr;
-		didInterp = false;
-		count = 0;
-	}
 	void UpdateInterpolations();
 	void AddInterpolation(DInterpolation *);
 	void RemoveInterpolation(DInterpolation *);
@@ -64,9 +58,6 @@ public:
 	void ClearInterpolations();
 };
 
-extern FInterpolator interpolator;
-
-
 
 #endif
 
diff --git a/src/r_utility.cpp b/src/r_utility.cpp
index 9a6f675cb..89a631712 100644
--- a/src/r_utility.cpp
+++ b/src/r_utility.cpp
@@ -854,8 +854,6 @@ void R_SetupFrame (FRenderViewpoint &viewpoint, FViewWindow &viewwindow, AActor
 
 	viewpoint.SetViewAngle (viewwindow);
 
-	interpolator.DoInterpolations (viewpoint.TicFrac);
-
 	// Keep the view within the sector's floor and ceiling
 	if (viewpoint.sector->PortalBlocksMovement(sector_t::ceiling))
 	{
diff --git a/src/serializer.h b/src/serializer.h
index d7d2a1e1a..2957dbdc7 100644
--- a/src/serializer.h
+++ b/src/serializer.h
@@ -24,6 +24,7 @@ struct FDoorAnimation;
 class FSoundID;
 struct FPolyObj;
 union FRenderStyle;
+struct FInterpolator;
 
 inline bool nullcmp(const void *buffer, size_t length)
 {
@@ -202,6 +203,7 @@ FSerializer &Serialize(FSerializer &arc, const char *key, FString &sid, FString
 FSerializer &Serialize(FSerializer &arc, const char *key, NumericValue &sid, NumericValue *def);
 FSerializer &Serialize(FSerializer &arc, const char *key, ticcmd_t &sid, ticcmd_t *def);
 FSerializer &Serialize(FSerializer &arc, const char *key, usercmd_t &cmd, usercmd_t *def);
+FSerializer &Serialize(FSerializer &arc, const char *key, FInterpolator &rs, FInterpolator *def);
 
 template<class T>
 FSerializer &Serialize(FSerializer &arc, const char *key, T *&value, T **)
diff --git a/src/swrenderer/scene/r_scene.cpp b/src/swrenderer/scene/r_scene.cpp
index 0678607a2..02bd00755 100644
--- a/src/swrenderer/scene/r_scene.cpp
+++ b/src/swrenderer/scene/r_scene.cpp
@@ -189,7 +189,6 @@ namespace swrenderer
 		RenderPSprites();
 
 		MainThread()->Viewport->viewpoint.camera->renderflags = savedflags;
-		interpolator.RestoreInterpolations();
 	}
 
 	void RenderScene::RenderPSprites()