diff --git a/source/core/gamecvars.cpp b/source/core/gamecvars.cpp
index b7a0fe838..ce7bbea74 100644
--- a/source/core/gamecvars.cpp
+++ b/source/core/gamecvars.cpp
@@ -89,6 +89,7 @@ CVARD(Bool, cl_interpolate, true, CVAR_ARCHIVE, "enable/disable view interpolati
 CVARD(Bool, cl_slopetilting, false, CVAR_ARCHIVE, "enable/disable slope tilting") // only implemented in Blood
 CVARD(Int, cl_showweapon, 1, CVAR_ARCHIVE, "enable/disable show weapons") // only implemented in Blood
 CVARD(Bool, cl_sointerpolation, true, CVAR_ARCHIVE, "enable/disable sector object interpolation") // only implemented in SW
+CVARD(Bool, cl_syncinput, false, CVAR_ARCHIVE, "enable/disable synchronized input with game's ticrate") // only implemented in SW
 CUSTOM_CVARD(Int, cl_crosshairscale, 50, CVAR_ARCHIVE, "changes the size of the crosshair")
 {
 	if (self < 1) self = 1;
diff --git a/source/core/gamecvars.h b/source/core/gamecvars.h
index e914da07a..68fcecf1e 100644
--- a/source/core/gamecvars.h
+++ b/source/core/gamecvars.h
@@ -24,6 +24,7 @@ EXTERN_CVAR(Int, cl_showweapon)
 EXTERN_CVAR(Int, cl_weaponswitch)
 EXTERN_CVAR(Int, cl_crosshairscale)
 EXTERN_CVAR(Bool, cl_sointerpolation)
+EXTERN_CVAR(Bool, cl_syncinput)
 
 EXTERN_CVAR(Bool, demorec_seeds_cvar)
 EXTERN_CVAR(Bool, demoplay_diffs)
diff --git a/source/games/duke/src/global.cpp b/source/games/duke/src/global.cpp
index c922c2976..138b67dfd 100644
--- a/source/games/duke/src/global.cpp
+++ b/source/games/duke/src/global.cpp
@@ -64,7 +64,6 @@ int16_t weaponsandammosprites[15];
 int PHEIGHT = PHEIGHT_DUKE;
 int duke3d_globalflags;
 input_t loc;
-bool synchronized_input;
 uint8_t ready2send;
 int gamequit;
 int playerswhenstarted;
diff --git a/source/games/duke/src/global.h b/source/games/duke/src/global.h
index 0d3577f36..c6d198feb 100644
--- a/source/games/duke/src/global.h
+++ b/source/games/duke/src/global.h
@@ -50,7 +50,6 @@ extern int16_t max_ammo_amount[MAX_WEAPONS];
 extern int16_t weaponsandammosprites[15];
 extern int32_t PHEIGHT;
 extern int duke3d_globalflags;
-extern bool synchronized_input;
 extern uint8_t ready2send;
 extern input_t loc;
 extern int gamequit;
diff --git a/source/games/duke/src/input.cpp b/source/games/duke/src/input.cpp
index 8b45e4d32..ff755869a 100644
--- a/source/games/duke/src/input.cpp
+++ b/source/games/duke/src/input.cpp
@@ -1181,7 +1181,7 @@ static void FinalizeInput(int playerNum, input_t& input, bool vehicle)
 		if (p->on_crane < 0 && p->newowner == -1)
 		{
 			loc.q16avel += input.q16avel;
-			if (!synchronized_input)
+			if (!cl_syncinput)
 			{
 				p->q16ang = (p->q16ang + input.q16avel) & 0x7FFFFFF;
 
@@ -1193,7 +1193,7 @@ static void FinalizeInput(int playerNum, input_t& input, bool vehicle)
 		if (p->newowner == -1 && p->return_to_center <= 0)
 		{
 			loc.q16horz = fix16_clamp(loc.q16horz + input.q16horz, F16(-MAXHORIZVEL), F16(MAXHORIZVEL));
-			if (!synchronized_input)
+			if (!cl_syncinput)
 				p->q16horiz += input.q16horz; // will be clamped by the caller because further operations on q16horiz can follow.
 		}
 	}
@@ -1241,7 +1241,7 @@ void GetInput()
 		processVehicleInput(p, info, input, scaleAdjust);
 		FinalizeInput(myconnectindex, input, true);
 
-		if (!synchronized_input)
+		if (!cl_syncinput)
 		{
 			p->q16horiz = clamp(p->q16horiz, F16(HORIZ_MIN), F16(HORIZ_MAX));
 			if (sprite[p->i].extra > 0)
@@ -1257,7 +1257,7 @@ void GetInput()
 		processInputBits(p, info);
 		FinalizeInput(myconnectindex, input, false);
 
-		if (!synchronized_input)
+		if (!cl_syncinput)
 		{
 			// Do these in the same order as the old code.
 			applylook(myconnectindex, scaleAdjust);
diff --git a/source/games/duke/src/player.cpp b/source/games/duke/src/player.cpp
index 31d32042c..1074506b1 100644
--- a/source/games/duke/src/player.cpp
+++ b/source/games/duke/src/player.cpp
@@ -405,7 +405,7 @@ void dokneeattack(int snum, int pi, const std::initializer_list<int> & respawnli
 	if (p->knee_incs > 0)
 	{
 		p->knee_incs++;
-		if (synchronized_input)
+		if (cl_syncinput)
 			p->addhoriz(-48);
 		else
 		{
@@ -881,7 +881,7 @@ void checklook(int snum, int sb_snum)
 	}
 	p->oq16ang = p->q16ang;
 
-	if (synchronized_input)
+	if (cl_syncinput)
 		applylook(snum, 1);
 }
 
diff --git a/source/games/duke/src/player_d.cpp b/source/games/duke/src/player_d.cpp
index fa48172e0..e5cda012b 100644
--- a/source/games/duke/src/player_d.cpp
+++ b/source/games/duke/src/player_d.cpp
@@ -2596,7 +2596,7 @@ void processinput_d(int snum)
 	pi = p->i;
 	s = &sprite[pi];
 
-	if (!synchronized_input)
+	if (!cl_syncinput)
 	{
 		p->horizAngleAdjust = 0;
 		p->horizSkew = 0;
@@ -2637,7 +2637,7 @@ void processinput_d(int snum)
 	hittype[pi].floorz = fz;
 	hittype[pi].ceilingz = cz;
 
-	if (synchronized_input)
+	if (cl_syncinput)
 	{
 		p->oq16horiz = p->q16horiz;
 		p->oq16horizoff = p->q16horizoff;
@@ -2796,7 +2796,7 @@ void processinput_d(int snum)
 	}
 	else if (sb_avel)          //p->ang += syncangvel * constant
 	{                         //ENGINE calculates angvel for you
-		if (synchronized_input)
+		if (cl_syncinput)
 		{
 			// may still be needed later for demo recording
 			int tempang;
@@ -3017,7 +3017,7 @@ HORIZONLY:
 			fi.activatebysector(psect, pi);
 	}
 
-	if (!synchronized_input)
+	if (!cl_syncinput)
 	{
 		if (p->return_to_center > 0)
 			p->return_to_center--;
@@ -3051,7 +3051,7 @@ HORIZONLY:
 		p->hard_landing--;
 	}
 
-	if (synchronized_input)
+	if (cl_syncinput)
 	{
 		p->q16horiz += (sync[snum].q16horz >> 1);
 		sethorizon(snum, sb_snum, 1);
diff --git a/source/games/duke/src/player_r.cpp b/source/games/duke/src/player_r.cpp
index 80409b05d..41505d45c 100644
--- a/source/games/duke/src/player_r.cpp
+++ b/source/games/duke/src/player_r.cpp
@@ -3472,7 +3472,7 @@ void processinput_r(int snum)
 	hittype[pi].floorz = fz;
 	hittype[pi].ceilingz = cz;
 
-	if (synchronized_input)
+	if (cl_syncinput)
 	{
 		p->oq16horiz = p->q16horiz;
 		p->oq16horizoff = p->q16horizoff;
@@ -3704,7 +3704,7 @@ void processinput_r(int snum)
 	}
 	else if (sb_avel)          //p->ang += syncangvel * constant
 	{                         //ENGINE calculates angvel for you
-		if (synchronized_input)
+		if (cl_syncinput)
 		{
 			// may still be needed later for demo recording
 			int tempang;
@@ -4041,7 +4041,7 @@ HORIZONLY:
 		return;
 	}
 
-	if (!synchronized_input && p->return_to_center > 0)
+	if (!cl_syncinput && p->return_to_center > 0)
 		p->return_to_center--;
 
 	if (sb_snum & SKB_CENTER_VIEW || p->hard_landing)
@@ -4078,7 +4078,7 @@ HORIZONLY:
 		p->hard_landing--;
 	}
 
-	if (synchronized_input)
+	if (cl_syncinput)
 	{
 		p->q16horiz += (sync[snum].q16horz >> 1);
 		sethorizon(snum, sb_snum, 1);
diff --git a/source/games/duke/src/render.cpp b/source/games/duke/src/render.cpp
index 71c10cbaa..ee21e510c 100644
--- a/source/games/duke/src/render.cpp
+++ b/source/games/duke/src/render.cpp
@@ -536,7 +536,7 @@ void displayrooms(int snum, int smoothratio)
 			setdrugmode(p, i);
 		}
 
-		if (!synchronized_input)
+		if (!cl_syncinput)
 			renderSetRollAngle(p->q16rotscrnang / (float)(FRACUNIT));
 		else
 		{
@@ -549,7 +549,7 @@ void displayrooms(int snum, int smoothratio)
 			cposx = omyx + mulscale16((int)(myx - omyx), smoothratio);
 			cposy = omyy + mulscale16((int)(myy - omyy), smoothratio);
 			cposz = omyz + mulscale16((int)(myz - omyz), smoothratio);
-			if (synchronized_input)
+			if (cl_syncinput)
 			{
 				cang.interpolate(q16ang(oq16myang), q16ang(q16myang), smoothratio);
 				fix16_t osum = (oq16myhoriz + oq16myhorizoff);
@@ -568,7 +568,7 @@ void displayrooms(int snum, int smoothratio)
 			cposx = p->oposx + mulscale16((int)(p->posx - p->oposx), smoothratio);
 			cposy = p->oposy + mulscale16((int)(p->posy - p->oposy), smoothratio);
 			cposz = p->oposz + mulscale16((int)(p->posz - p->oposz), smoothratio);
-			if (synchronized_input /*|| smoothcamera*/)
+			if (cl_syncinput /*|| smoothcamera*/)
 			{
 				// Original code for when the values are passed through the sync struct
 				cang.interpolate(q16ang(p->oq16ang), q16ang(p->q16ang), smoothratio);