diff --git a/include/QF/render.h b/include/QF/render.h
index 631ebde7b..36ca2379e 100644
--- a/include/QF/render.h
+++ b/include/QF/render.h
@@ -185,7 +185,7 @@ void R_ClearEnts (void);
 struct entity_s **R_NewEntity (void);
 
 dlight_t *R_AllocDlight (int key);
-void R_DecayLights (void);
+void R_DecayLights (double frametime);
 void R_ClearDlights (void);
 
 #endif // __render_h
diff --git a/nq/source/gl_screen.c b/nq/source/gl_screen.c
index bae11343b..cefc493b0 100644
--- a/nq/source/gl_screen.c
+++ b/nq/source/gl_screen.c
@@ -884,7 +884,6 @@ SCR_UpdateScreen (double realtime)
 	if (block_drawing)
 		return;
 
-	r_frametime = min (realtime - r_realtime, 5); // bound to 0.2 fps
 	r_realtime = realtime;
 
 	vid.numpages = 2 + gl_triplebuffer->int_val;
diff --git a/nq/source/host.c b/nq/source/host.c
index 044fb4d70..4fa3842ae 100644
--- a/nq/source/host.c
+++ b/nq/source/host.c
@@ -713,7 +713,7 @@ _Host_Frame (float time)
 // update audio
 	if (cls.signon == SIGNONS) {
 		S_Update (r_origin, vpn, vright, vup);
-		R_DecayLights ();
+		R_DecayLights (host_frametime);
 	} else
 		S_Update (vec3_origin, vec3_origin, vec3_origin, vec3_origin);
 
diff --git a/nq/source/r_main.c b/nq/source/r_main.c
index e5be65e55..ac81ed25f 100644
--- a/nq/source/r_main.c
+++ b/nq/source/r_main.c
@@ -3,7 +3,6 @@
 #include "r_local.h"
 
 double r_realtime;
-double r_frametime;
 dlight_t    r_dlights[MAX_DLIGHTS];
 
 dlight_t *
@@ -42,7 +41,7 @@ R_AllocDlight (int key)
 }
 
 void
-R_DecayLights (void)
+R_DecayLights (double frametime)
 {
 	int         i;
 	dlight_t   *dl;
@@ -52,7 +51,7 @@ R_DecayLights (void)
 		if (dl->die < r_realtime || !dl->radius)
 			continue;
 
-		dl->radius -= r_frametime * dl->decay;
+		dl->radius -= frametime * dl->decay;
 		if (dl->radius < 0)
 			dl->radius = 0;
 	}
diff --git a/nq/source/screen.c b/nq/source/screen.c
index 24a770b0b..8e53a8c1f 100644
--- a/nq/source/screen.c
+++ b/nq/source/screen.c
@@ -893,7 +893,6 @@ SCR_UpdateScreen (double realtime)
 	}
 #endif
 
-	r_frametime = min (realtime - r_realtime, 5); // bound to 0.2 fps
 	r_realtime = realtime;
 
 	scr_copytop = 0;
diff --git a/qw/source/cl_main.c b/qw/source/cl_main.c
index 310734f38..e762c52e0 100644
--- a/qw/source/cl_main.c
+++ b/qw/source/cl_main.c
@@ -1488,7 +1488,7 @@ Host_Frame (float time)
 	// update audio
 	if (cls.state == ca_active) {
 		S_Update (r_origin, vpn, vright, vup);
-		R_DecayLights ();
+		R_DecayLights (host_frametime);
 	} else
 		S_Update (vec3_origin, vec3_origin, vec3_origin, vec3_origin);
 
diff --git a/qw/source/gl_screen.c b/qw/source/gl_screen.c
index 0cea06696..fc53d79a0 100644
--- a/qw/source/gl_screen.c
+++ b/qw/source/gl_screen.c
@@ -882,7 +882,6 @@ SCR_UpdateScreen (double realtime)
 	if (block_drawing)
 		return;
 
-	r_frametime = min (realtime - r_realtime, 5); // bound to 0.2 fps
 	r_realtime = realtime;
 
 	vid.numpages = 2 + gl_triplebuffer->int_val;
diff --git a/qw/source/r_main.c b/qw/source/r_main.c
index e5be65e55..ac81ed25f 100644
--- a/qw/source/r_main.c
+++ b/qw/source/r_main.c
@@ -3,7 +3,6 @@
 #include "r_local.h"
 
 double r_realtime;
-double r_frametime;
 dlight_t    r_dlights[MAX_DLIGHTS];
 
 dlight_t *
@@ -42,7 +41,7 @@ R_AllocDlight (int key)
 }
 
 void
-R_DecayLights (void)
+R_DecayLights (double frametime)
 {
 	int         i;
 	dlight_t   *dl;
@@ -52,7 +51,7 @@ R_DecayLights (void)
 		if (dl->die < r_realtime || !dl->radius)
 			continue;
 
-		dl->radius -= r_frametime * dl->decay;
+		dl->radius -= frametime * dl->decay;
 		if (dl->radius < 0)
 			dl->radius = 0;
 	}
diff --git a/qw/source/screen.c b/qw/source/screen.c
index 567c6672e..6c08dcd24 100644
--- a/qw/source/screen.c
+++ b/qw/source/screen.c
@@ -892,7 +892,6 @@ SCR_UpdateScreen (double realtime)
 	}
 #endif
 
-	r_frametime = min (realtime - r_realtime, 5); // bound to 0.2 fps
 	r_realtime = realtime;
 
 	scr_copytop = 0;