diff --git a/assets/tiling.frag b/assets/tiling.frag
index 2b2359052..64bd0243b 100644
--- a/assets/tiling.frag
+++ b/assets/tiling.frag
@@ -25,7 +25,7 @@ uniform ivec2 tilesInAtlas = ivec2(256, 256);
 uniform ivec2 atlasTexSize = ivec2(4096, 4096);
 ivec2 tileSizeInPx = atlasTexSize / tilesInAtlas;
 
-uniform vec4 colourFilter = vec4(1, 1, 1, 1);
+uniform vec4 colourFilter = vec4(1, 1, 1, 1); // used by WALL to darken it
 
 uniform ivec2 cameraTranslation = ivec2(0, 0);
 
diff --git a/src/net/torvald/terrarum/Terrarum.kt b/src/net/torvald/terrarum/Terrarum.kt
index 5c58a8878..64866efeb 100644
--- a/src/net/torvald/terrarum/Terrarum.kt
+++ b/src/net/torvald/terrarum/Terrarum.kt
@@ -694,7 +694,14 @@ object Terrarum : Screen {
         get() = Gdx.input.x
     inline val mouseScreenY: Int
         get() = Gdx.input.y
-
+    /** Bigger than 1.0 */
+    inline val updateRate: Double
+        get() = 1.0 / Gdx.graphics.deltaTime
+    val updateRateStr: String
+        get() = String.format("%.2f", updateRate)
+    /** Smaller than 1.0 */
+    val renderRate = 1.0 / TARGET_INTERNAL_FPS
+    val renderRateStr = TARGET_INTERNAL_FPS.toString()
 
     /**
      * Usage:
diff --git a/src/net/torvald/terrarum/TitleScreen.kt b/src/net/torvald/terrarum/TitleScreen.kt
index 421090f90..8458a378f 100644
--- a/src/net/torvald/terrarum/TitleScreen.kt
+++ b/src/net/torvald/terrarum/TitleScreen.kt
@@ -14,7 +14,6 @@ import net.torvald.terrarum.blockproperties.BlockCodex
 import net.torvald.terrarum.gameactors.AVKey
 import net.torvald.terrarum.gameactors.Actor
 import net.torvald.terrarum.gameactors.ai.ActorAI
-import net.torvald.terrarum.gameworld.GameWorld
 import net.torvald.terrarum.gameworld.fmod
 import net.torvald.terrarum.langpack.Lang
 import net.torvald.terrarum.modulebasegame.Ingame
@@ -191,7 +190,7 @@ class TitleScreen(val batch: SpriteBatch) : Screen {
     private val introUncoverTime: Second = 0.3f
     private var introUncoverDeltaCounter = 0f
     private var updateDeltaCounter = 0.0
-    protected val updateRate = 1.0 / Terrarum.TARGET_INTERNAL_FPS
+    protected val renderRate = Terrarum.renderRate
 
     override fun render(delta: Float) {
         if (!loadDone) {
@@ -201,9 +200,9 @@ class TitleScreen(val batch: SpriteBatch) : Screen {
             // async update
             updateDeltaCounter += delta
             var updateTries = 0
-            while (updateDeltaCounter >= updateRate) {
+            while (updateDeltaCounter >= renderRate) {
                 updateScreen(delta)
-                updateDeltaCounter -= updateRate
+                updateDeltaCounter -= renderRate
                 updateTries++
 
                 if (updateTries >= Terrarum.UPDATE_CATCHUP_MAX_TRIES) {
diff --git a/src/net/torvald/terrarum/modulebasegame/Ingame.kt b/src/net/torvald/terrarum/modulebasegame/Ingame.kt
index d73e55a7f..6a0cc4ae0 100644
--- a/src/net/torvald/terrarum/modulebasegame/Ingame.kt
+++ b/src/net/torvald/terrarum/modulebasegame/Ingame.kt
@@ -8,7 +8,6 @@ import net.torvald.dataclass.CircularArray
 import net.torvald.terrarum.blockproperties.BlockPropUtil
 import net.torvald.terrarum.blockstats.BlockStats
 import net.torvald.terrarum.concurrent.ThreadParallel
-import net.torvald.terrarum.console.*
 import net.torvald.terrarum.gameactors.*
 import net.torvald.terrarum.modulebasegame.gameactors.physicssolver.CollisionSolver
 import net.torvald.terrarum.gamecontroller.IngameController
@@ -28,7 +27,6 @@ import net.torvald.terrarum.AppLoader.printdbg
 import net.torvald.terrarum.modulebasegame.console.AVTracker
 import net.torvald.terrarum.modulebasegame.console.ActorsList
 import net.torvald.terrarum.console.Authenticator
-import net.torvald.terrarum.console.SetGlobalLightOverride
 import net.torvald.terrarum.itemproperties.GameItem
 import net.torvald.terrarum.modulebasegame.gameactors.*
 import net.torvald.terrarum.modulebasegame.gameworld.GameWorldExtension
@@ -81,8 +79,8 @@ open class Ingame(batch: SpriteBatch) : IngameInstance(batch) {
         }
 
         fun getCanonicalTitle() = AppLoader.GAME_NAME +
-                                " — F: ${Gdx.graphics.framesPerSecond} (${Terrarum.TARGET_INTERNAL_FPS})" +
-                                " — M: J${Terrarum.memJavaHeap}M / N${Terrarum.memNativeHeap}M / X${Terrarum.memXmx}M"
+                                  " — F: ${Gdx.graphics.framesPerSecond} (Δt${Terrarum.updateRateStr} / RT${Terrarum.renderRateStr})" +
+                                  " — M: J${Terrarum.memJavaHeap}M / N${Terrarum.memNativeHeap}M / X${Terrarum.memXmx}M"
     }
 
 
@@ -420,7 +418,7 @@ open class Ingame(batch: SpriteBatch) : IngameInstance(batch) {
     }
 
     protected var updateDeltaCounter = 0.0
-    protected val updateRate = 1.0 / Terrarum.TARGET_INTERNAL_FPS
+    protected val renderRate = Terrarum.renderRate
 
     private var firstTimeRun = true
 
@@ -430,9 +428,9 @@ open class Ingame(batch: SpriteBatch) : IngameInstance(batch) {
     private class ThreadIngameUpdate(val ingame: Ingame): Runnable {
         override fun run() {
             var updateTries = 0
-            while (ingame.updateDeltaCounter >= ingame.updateRate) {
+            while (ingame.updateDeltaCounter >= ingame.renderRate) {
                 ingame.updateGame(Terrarum.deltaTime)
-                ingame.updateDeltaCounter -= ingame.updateRate
+                ingame.updateDeltaCounter -= ingame.renderRate
                 updateTries++
 
                 if (updateTries >= Terrarum.UPDATE_CATCHUP_MAX_TRIES) {
@@ -486,12 +484,12 @@ open class Ingame(batch: SpriteBatch) : IngameInstance(batch) {
         }
         else {
             var updateTries = 0
-            while (updateDeltaCounter >= updateRate) {
+            while (updateDeltaCounter >= renderRate) {
 
                 //updateGame(delta)
                 Terrarum.debugTimers["Ingame.update"] = measureNanoTime { updateGame(delta) }
 
-                updateDeltaCounter -= updateRate
+                updateDeltaCounter -= renderRate
                 updateTries++
 
                 if (updateTries >= Terrarum.UPDATE_CATCHUP_MAX_TRIES) {
diff --git a/src/net/torvald/terrarum/worlddrawer/BlocksDrawerNew.kt b/src/net/torvald/terrarum/worlddrawer/BlocksDrawerNew.kt
index 281bb0b84..fd78cb0c3 100644
--- a/src/net/torvald/terrarum/worlddrawer/BlocksDrawerNew.kt
+++ b/src/net/torvald/terrarum/worlddrawer/BlocksDrawerNew.kt
@@ -733,9 +733,8 @@ internal object BlocksDrawer {
         shader.setUniformi("tilemapDimension", tilesBuffer.width, tilesBuffer.height)
         shader.setUniformf("tilesInAxes", tilesInHorizontal.toFloat(), tilesInVertical.toFloat())
         shader.setUniformi("cameraTranslation", WorldCamera.x fmod TILE_SIZE, WorldCamera.y fmod TILE_SIZE)
-        shader.setUniformi("tileSizeInPx", TILE_SIZE)
-        shader.setUniformi("tilesInAtlas", tileAtlas.horizontalCount, tileAtlas.verticalCount) //depends on the tile atlas
-        shader.setUniformi("atlasTexSize", tileAtlas.texture.width, tileAtlas.texture.height) //depends on the tile atlas
+        /*shader hard-code*/shader.setUniformi("tilesInAtlas", tileAtlas.horizontalCount, tileAtlas.verticalCount) //depends on the tile atlas
+        /*shader hard-code*/shader.setUniformi("atlasTexSize", tileAtlas.texture.width, tileAtlas.texture.height) //depends on the tile atlas
         tilesQuad.render(shader, GL20.GL_TRIANGLES)
         shader.end()