diff --git a/source/games/sw/src/draw.cpp b/source/games/sw/src/draw.cpp
index e1e4cc7a9..c720e3486 100644
--- a/source/games/sw/src/draw.cpp
+++ b/source/games/sw/src/draw.cpp
@@ -1128,7 +1128,7 @@ void RestorePortalState()
     }
 }
 
-void drawscreen(PLAYER* pp, double smoothratio, bool sceneonly)
+void drawscreen(PLAYER* pp, double interpfrac, bool sceneonly)
 {
     DAngle tang, trotscrnang;
     fixedhoriz thoriz;
@@ -1137,9 +1137,6 @@ void drawscreen(PLAYER* pp, double smoothratio, bool sceneonly)
     // prediction player if prediction is on, else regular player
     PLAYER* camerapp = (PredictionOn && CommEnabled && pp == Player+myconnectindex) ? ppp : pp;
 
-    // temporary interpolation scaler.
-    double interpfrac = smoothratio * (1. / MaxSmoothRatio);
-
     DrawScreen = true;
     PreDraw();
 
@@ -1149,7 +1146,7 @@ void drawscreen(PLAYER* pp, double smoothratio, bool sceneonly)
     {
         // Stick at beginning of drawscreen
         DoInterpolations(interpfrac);
-        if (cl_sointerpolation) so_dointerpolations((int)smoothratio);
+        if (cl_sointerpolation) so_dointerpolations(interpfrac);
     }
 
     // Get initial player position, interpolating if required.
diff --git a/source/games/sw/src/game.cpp b/source/games/sw/src/game.cpp
index b8bece965..e02349ac9 100644
--- a/source/games/sw/src/game.cpp
+++ b/source/games/sw/src/game.cpp
@@ -709,7 +709,7 @@ void GameInterface::Render()
 {
     drawtime.Reset();
     drawtime.Clock();
-    drawscreen(Player + screenpeek, (paused || !cl_interpolate || cl_capfps ? 1. : I_GetTimeFrac()) * MaxSmoothRatio, false);
+    drawscreen(Player + screenpeek, paused || !cl_interpolate || cl_capfps ? 1. : I_GetTimeFrac(), false);
     drawtime.Unclock();
 }
 
diff --git a/source/games/sw/src/interpso.cpp b/source/games/sw/src/interpso.cpp
index f42689547..d7ae472b1 100644
--- a/source/games/sw/src/interpso.cpp
+++ b/source/games/sw/src/interpso.cpp
@@ -352,7 +352,7 @@ void so_updateinterpolations(void) // Stick at beginning of domovethings
 
 // must call restore for every do interpolations
 // make sure you don't exit
-void so_dointerpolations(int32_t smoothratio)                      // Stick at beginning of drawscreen
+void so_dointerpolations(double interpfrac)                      // Stick at beginning of drawscreen
 {
     int32_t i;
     SECTOR_OBJECT* sop;
@@ -418,9 +418,9 @@ void so_dointerpolations(int32_t smoothratio)                      // Stick at b
                !Player[screenpeek].sop_remote)))
             continue;
 
-        int32_t ratio = smoothratio * synctics + MaxSmoothRatio * interp->tic;
+        double ratio = interpfrac * synctics + interp->tic;
         ratio /= interp->lasttic;
-        ratio = (interp->tic == interp->lasttic) ? MaxSmoothRatio : ratio;
+        ratio = (interp->tic == interp->lasttic) ? 1. : ratio;
 
         for (i = 0, data = interp->data; i < interp->numinterpolations; i++, data++)
         {
@@ -443,12 +443,12 @@ void so_dointerpolations(int32_t smoothratio)                      // Stick at b
             {
                 DSWActor* actor = data->actorofang;
                 if (!actor) continue;
-                actor->set_int_ang(NORM_ANGLE(data->lastoldipos + MulScale(data->lastangdiff.Buildang(), ratio, 16)));
+                actor->spr.angle = (DAngle::fromBuildf(data->lastoldipos) + data->lastangdiff * ratio).Normalized360();
             }
             else
             {
                 double delta = data->lastipos - data->lastoldipos;
-                setvalue(*data, data->lastoldipos + MulScaleF(delta, ratio, 16));
+                setvalue(*data, data->lastoldipos + delta * ratio);
             }
         }
     }
diff --git a/source/games/sw/src/interpso.h b/source/games/sw/src/interpso.h
index 8cff087f2..b70d1cf67 100644
--- a/source/games/sw/src/interpso.h
+++ b/source/games/sw/src/interpso.h
@@ -37,7 +37,7 @@ void so_stopspriteinterpolation(SECTOR_OBJECT* sop, DSWActor *sp);
 void so_setinterpolationangdiff(SECTOR_OBJECT* sop, int16_t angdiff);
 void so_setinterpolationtics(SECTOR_OBJECT* sop, int16_t locktics);
 void so_updateinterpolations(void);
-void so_dointerpolations(int32_t smoothratio);
+void so_dointerpolations(double interpfrac);
 void so_restoreinterpolations(void);
 void so_serializeinterpolations(FSerializer& arc);
 
diff --git a/source/games/sw/src/network.cpp b/source/games/sw/src/network.cpp
index 31c04d7a7..e0ab416ff 100644
--- a/source/games/sw/src/network.cpp
+++ b/source/games/sw/src/network.cpp
@@ -55,8 +55,6 @@ gNET gNet;
 bool CommEnabled = false;
 uint8_t CommPlayers = 0;
 
-double smoothratio;
-
 // must start out as 0
 
 void InitNetPlayerOptions(void)
diff --git a/source/games/sw/src/panel.h b/source/games/sw/src/panel.h
index bff890974..46aa93688 100644
--- a/source/games/sw/src/panel.h
+++ b/source/games/sw/src/panel.h
@@ -193,7 +193,7 @@ enum
 PANEL_SPRITE* pSpawnSprite(PLAYER* pp, PANEL_STATE* state, uint8_t priority, double x, double y);
 void pSetSuicide(PANEL_SPRITE* psp);
 bool pKillScreenSpiteIDs(PLAYER* pp, short id);
-void PreUpdatePanel(double smoothratio);
+void PreUpdatePanel(double interpfrac);
 void UpdatePanel(double interpfrac);
 void PlayerUpdateArmor(PLAYER* pp,short value);
 void pToggleCrosshair(void);