diff --git a/source/duke3d/src/cheats.cpp b/source/duke3d/src/cheats.cpp
index 38b4eeda1..f2edca896 100644
--- a/source/duke3d/src/cheats.cpp
+++ b/source/duke3d/src/cheats.cpp
@@ -638,7 +638,7 @@ void G_DoCheats(void)
                     return;
 
                 case CHEAT_RATE:
-                    if (ud.showfps++ > 2)
+                    if (++ud.showfps > 3)
                         ud.showfps = 0;
 
                     end_cheat(pPlayer);
diff --git a/source/duke3d/src/game.cpp b/source/duke3d/src/game.cpp
index 5025240b2..a93bf5b49 100644
--- a/source/duke3d/src/game.cpp
+++ b/source/duke3d/src/game.cpp
@@ -6748,6 +6748,8 @@ MAIN_LOOP_RESTART:
 
         OSD_DispatchQueued();
 
+        char gameUpdate = false;
+        uint32_t gameUpdateStartTime = timerGetTicks();
         if (((g_netClient || g_netServer) || !(g_player[myconnectindex].ps->gm & (MODE_MENU|MODE_DEMO))) && totalclock >= ototalclock+TICSPERFRAME)
         {
             if (g_networkMode != NET_DEDICATED_SERVER)
@@ -6793,6 +6795,9 @@ MAIN_LOOP_RESTART:
                 }
             }
             while (((g_netClient || g_netServer) || !(g_player[myconnectindex].ps->gm & (MODE_MENU|MODE_DEMO))) && totalclock >= ototalclock+TICSPERFRAME);
+
+            gameUpdate = true;
+            g_gameUpdateTime = timerGetTicks()-gameUpdateStartTime;
         }
 
         G_DoCheats();
@@ -6823,6 +6828,11 @@ MAIN_LOOP_RESTART:
             if (videoGetRenderMode() >= REND_POLYMOST)
                 G_DrawBackground();
             G_DisplayRest(smoothRatio);
+
+            if (gameUpdate)
+            {
+                g_gameUpdateAndDrawTime = timerGetTicks()-gameUpdateStartTime;
+            }
         }
 
         // handle CON_SAVE and CON_SAVENN
diff --git a/source/duke3d/src/global.h b/source/duke3d/src/global.h
index c9c9ba0ac..3f4274a96 100644
--- a/source/duke3d/src/global.h
+++ b/source/duke3d/src/global.h
@@ -161,6 +161,8 @@ G_EXTERN projectile_t SpriteProjectile[MAXSPRITES];
 G_EXTERN sound_t g_sounds[MAXSOUNDS];
 G_EXTERN uint32_t everyothertime;
 G_EXTERN uint32_t g_moveThingsCount;
+G_EXTERN uint32_t g_gameUpdateTime;
+G_EXTERN uint32_t g_gameUpdateAndDrawTime;
 
 #ifndef global_c_
 extern char CheatKeys[2];
diff --git a/source/duke3d/src/osdcmds.cpp b/source/duke3d/src/osdcmds.cpp
index 5f23cb676..bf1b05e37 100644
--- a/source/duke3d/src/osdcmds.cpp
+++ b/source/duke3d/src/osdcmds.cpp
@@ -1705,7 +1705,7 @@ int32_t registerosdcommands(void)
 
         { "r_camrefreshdelay", "minimum delay between security camera sprite updates, 120 = 1 second", (void *)&ud.camera_time, CVAR_INT, 1, 240 },
         { "r_drawweapon", "enable/disable weapon drawing", (void *)&ud.drawweapon, CVAR_INT, 0, 2 },
-        { "r_showfps", "show the frame rate counter", (void *)&ud.showfps, CVAR_INT, 0, 2 },
+        { "r_showfps", "show the frame rate counter", (void *)&ud.showfps, CVAR_INT, 0, 3 },
         { "r_shadows", "enable/disable sprite and model shadows", (void *)&ud.shadows, CVAR_BOOL, 0, 1 },
         { "r_size", "change size of viewable area", (void *)&ud.screen_size, CVAR_INT|CVAR_FUNCPTR, 0, 64 },
         { "r_rotatespritenowidescreen", "pass bit 1024 to all CON rotatesprite calls", (void *)&g_rotatespriteNoWidescreen, CVAR_BOOL|CVAR_FUNCPTR, 0, 1 },
diff --git a/source/duke3d/src/screens.cpp b/source/duke3d/src/screens.cpp
index 40fc2a92b..887b4ecf5 100644
--- a/source/duke3d/src/screens.cpp
+++ b/source/duke3d/src/screens.cpp
@@ -777,6 +777,7 @@ static void G_ShowCacheLocks(void)
 }
 
 #define LOW_FPS 30
+#define SLOW_FRAME_TIME 33
 
 #if defined GEKKO
 # define FPS_YOFFSET 16
@@ -790,6 +791,7 @@ static void G_PrintFPS(void)
 {
     static int32_t frameCount = 0, lastFPS = 0, lastFrameTime = 0, cumulativeFrameDelay = 0;
     static int32_t minFPS = -1, maxFPS = 0;
+    static uint32_t minGameUpdate = -1, maxGameUpdate = 0;
 
     int32_t frameTime = timerGetTicks();
     int32_t frameDelay = frameTime - lastFrameTime;
@@ -821,6 +823,23 @@ static void G_PrintFPS(void)
                 printext256(windowxy2.x-(chars<<(3-x)), windowxy1.y+20+FPS_YOFFSET,
                     FPS_COLOR(minFPS < LOW_FPS), -1, tempbuf, x);
             }
+            if (ud.showfps > 2)
+            {
+                if (g_gameUpdateTime > maxGameUpdate) maxGameUpdate = g_gameUpdateTime;
+                if (g_gameUpdateTime < minGameUpdate) minGameUpdate = g_gameUpdateTime;
+
+                chars = Bsprintf(tempbuf, "Game Update: %2d ms GU & Draw: %2d ms", g_gameUpdateTime, g_gameUpdateAndDrawTime);
+
+                printext256(windowxy2.x-(chars<<(3-x))+1, windowxy1.y+30+2+FPS_YOFFSET, 0, -1, tempbuf, x);
+                printext256(windowxy2.x-(chars<<(3-x)), windowxy1.y+30+FPS_YOFFSET,
+                    FPS_COLOR(g_gameUpdateAndDrawTime >= SLOW_FRAME_TIME), -1, tempbuf, x);
+
+                chars = Bsprintf(tempbuf, "Min Game Update: %2d ms Max Game Update: %2d ms", minGameUpdate, maxGameUpdate);
+
+                printext256(windowxy2.x-(chars<<(3-x))+1, windowxy1.y+40+2+FPS_YOFFSET, 0, -1, tempbuf, x);
+                printext256(windowxy2.x-(chars<<(3-x)), windowxy1.y+40+FPS_YOFFSET,
+                    FPS_COLOR(maxGameUpdate >= SLOW_FRAME_TIME), -1, tempbuf, x);
+            }
 
             // lag meter
             if (g_netClientPeer)
@@ -849,6 +868,8 @@ static void G_PrintFPS(void)
                 {
                     maxFPS = (lastFPS + maxFPS) >> 1;
                     minFPS = (lastFPS + minFPS) >> 1;
+                    maxGameUpdate = (g_gameUpdateTime + maxGameUpdate) >> 1;
+                    minGameUpdate = (g_gameUpdateTime + minGameUpdate) >> 1;
                     secondCounter = 0;
                 }
             }