diff --git a/src/runtime/app/session.ts b/src/runtime/app/session.ts
index 90da9e8..7f29b04 100644
--- a/src/runtime/app/session.ts
+++ b/src/runtime/app/session.ts
@@ -5,7 +5,7 @@ import {
   quakeLoadingProgressGroup,
   type QuakeLoadingProgressTracker,
 } from "../loadingConsole";
-import { preloadQuakeRenderBundleAssets } from "../renderBundleMesh";
+import { preloadQuakeRenderBundleAssets, preloadQuakeRenderBundleFloorAssets } from "../renderBundleMesh";
 import type { QuakeUrlUpdateMode, QuakeUrlView } from "../routeState";
 
 export const QUAKE_ASSET_ROOT = "/q";
@@ -200,7 +200,10 @@ export async function fetchQuakeScene(
   }
   const renderBundlePreloads = [
     ...(prepared.renderBundle
-      ? [preloadQuakeRenderBundleAssets(prepared.renderBundle, worldProgress, { preloadImages: false })]
+      ? [
+          preloadQuakeRenderBundleAssets(prepared.renderBundle, worldProgress, { preloadImages: false }),
+          preloadQuakeRenderBundleFloorAssets(prepared.renderBundle, mapName ?? "", worldProgress),
+        ]
       : []),
     ...(prepared.lightstyleRenderBundle
       ? [preloadQuakeRenderBundleAssets(prepared.lightstyleRenderBundle, worldProgress, { preloadImages: false })]
diff --git a/src/runtime/mobileControls.ts b/src/runtime/mobileControls.ts
index db2e9db..23ff087 100644
--- a/src/runtime/mobileControls.ts
+++ b/src/runtime/mobileControls.ts
@@ -3,6 +3,12 @@ import { markQuakeTrace } from "./debug/traceMarks";
 export const QUAKE_MOBILE_CONTROLS_QUERY =
   "(any-pointer: coarse), (max-width: 960px)";
 
+const QUAKE_MOBILE_MOVE_ZONE_SIZE = 144;
+const QUAKE_MOBILE_STICK_SIZE = 108;
+const QUAKE_MOBILE_STICK_FRONT_SIZE = 54;
+const QUAKE_MOBILE_STICK_FRONT_TRAVEL = QUAKE_MOBILE_STICK_SIZE / 4;
+const QUAKE_MOBILE_STICK_CENTER = QUAKE_MOBILE_MOVE_ZONE_SIZE / 2;
+
 interface QuakeMobileControlsOptions {
   root: HTMLElement;
   moveDeadzone: number;
@@ -48,6 +54,10 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
   let moveX = 0;
   let moveY = 0;
   let movePointerId: number | null = null;
+  let moveAnchorX = 0;
+  let moveAnchorY = 0;
+  let moveStickCenterX = QUAKE_MOBILE_STICK_CENTER;
+  let moveStickCenterY = QUAKE_MOBILE_STICK_CENTER;
   let moveStartedAt = 0;
   let moveSampleCount = 0;
   let lookPointerId: number | null = null;
@@ -297,6 +307,7 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
       x: event.clientX,
       y: event.clientY,
     });
+    setMoveAnchor(event);
     try {
       moveZone?.setPointerCapture(event.pointerId);
     } catch {
@@ -336,9 +347,16 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
       return;
     }
     moveSampleCount++;
-    const centerX = rect.left + rect.width / 2;
-    const centerY = rect.top + rect.height / 2;
-    setMoveInput((event.clientX - centerX) / radius, (centerY - event.clientY) / radius, phase);
+    setMoveInput((event.clientX - moveAnchorX) / radius, (moveAnchorY - event.clientY) / radius, phase);
+  }
+
+  function setMoveAnchor(event: PointerEvent): void {
+    const rect = moveZone?.getBoundingClientRect();
+    moveAnchorX = event.clientX;
+    moveAnchorY = event.clientY;
+    moveStickCenterX = rect ? event.clientX - rect.left : QUAKE_MOBILE_STICK_CENTER;
+    moveStickCenterY = rect ? event.clientY - rect.top : QUAKE_MOBILE_STICK_CENTER;
+    syncMoveStickVisual(0, 0, true);
   }
 
   function setMoveInput(x: number, y: number, source: "start" | "move"): void {
@@ -395,11 +413,15 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
       }
     }
     movePointerId = null;
+    moveAnchorX = 0;
+    moveAnchorY = 0;
     moveX = 0;
     moveY = 0;
     moveTime = 0;
     moveStartedAt = 0;
     moveSampleCount = 0;
+    moveStickCenterX = QUAKE_MOBILE_STICK_CENTER;
+    moveStickCenterY = QUAKE_MOBILE_STICK_CENTER;
     syncMoveStickVisual(0, 0, false);
     options.onAnalogMove(0, 0);
     if (!moveFrame) return;
@@ -444,17 +466,14 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
     const back = moveStickBack;
     const front = moveStickFront;
     if (!stick || !back || !front) return;
-    const stickSize = 108;
-    const frontSize = 54;
-    const frontTravel = stickSize / 4;
     stick.style.position = "absolute";
     stick.style.display = "block";
-    stick.style.left = "50%";
-    stick.style.top = "50%";
-    stick.style.width = `${stickSize}px`;
-    stick.style.height = `${stickSize}px`;
-    stick.style.marginLeft = `${-stickSize / 2}px`;
-    stick.style.marginTop = `${-stickSize / 2}px`;
+    stick.style.left = `${moveStickCenterX}px`;
+    stick.style.top = `${moveStickCenterY}px`;
+    stick.style.width = `${QUAKE_MOBILE_STICK_SIZE}px`;
+    stick.style.height = `${QUAKE_MOBILE_STICK_SIZE}px`;
+    stick.style.marginLeft = `${-QUAKE_MOBILE_STICK_SIZE / 2}px`;
+    stick.style.marginTop = `${-QUAKE_MOBILE_STICK_SIZE / 2}px`;
     stick.style.opacity = active ? "1" : "0.58";
     stick.style.touchAction = "none";
     stick.style.userSelect = "none";
@@ -465,8 +484,8 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
     back.style.display = "block";
     back.style.left = "0px";
     back.style.top = "0px";
-    back.style.width = `${stickSize}px`;
-    back.style.height = `${stickSize}px`;
+    back.style.width = `${QUAKE_MOBILE_STICK_SIZE}px`;
+    back.style.height = `${QUAKE_MOBILE_STICK_SIZE}px`;
     back.style.marginLeft = "0px";
     back.style.marginTop = "0px";
     back.style.borderRadius = "50%";
@@ -479,17 +498,17 @@ export function createQuakeMobileControls(options: QuakeMobileControlsOptions):
     front.style.display = "block";
     front.style.left = "50%";
     front.style.top = "50%";
-    front.style.width = `${frontSize}px`;
-    front.style.height = `${frontSize}px`;
-    front.style.marginLeft = `${-frontSize / 2}px`;
-    front.style.marginTop = `${-frontSize / 2}px`;
+    front.style.width = `${QUAKE_MOBILE_STICK_FRONT_SIZE}px`;
+    front.style.height = `${QUAKE_MOBILE_STICK_FRONT_SIZE}px`;
+    front.style.marginLeft = `${-QUAKE_MOBILE_STICK_FRONT_SIZE / 2}px`;
+    front.style.marginTop = `${-QUAKE_MOBILE_STICK_FRONT_SIZE / 2}px`;
     front.style.borderRadius = "50%";
     front.style.background = "rgba(245, 232, 200, 0.18)";
     front.style.opacity = "0.5";
     front.style.boxSizing = "border-box";
     front.style.border = "2px solid rgba(245, 232, 200, 0.48)";
     front.style.pointerEvents = "none";
-    front.style.transform = `translate(${x * frontTravel}px, ${-y * frontTravel}px)`;
+    front.style.transform = `translate(${x * QUAKE_MOBILE_STICK_FRONT_TRAVEL}px, ${-y * QUAKE_MOBILE_STICK_FRONT_TRAVEL}px)`;
   }
 
   function handleFirePointerDown(event: PointerEvent): void {
diff --git a/src/runtime/renderBundleMesh.ts b/src/runtime/renderBundleMesh.ts
index 64e6e89..8e78eb3 100644
--- a/src/runtime/renderBundleMesh.ts
+++ b/src/runtime/renderBundleMesh.ts
@@ -94,6 +94,7 @@ const QUAKE_MOTION_MATERIAL_CHUNK_COUNT = 12;
 const QUAKE_MOTION_MATERIAL_DEFER_FRAME_COUNT = 2;
 const QUAKE_MOTION_MATERIAL_TEXTURED_AREA_RATIO = 0.25;
 const QUAKE_RENDER_BUNDLE_TEXTURE_PRELOAD_STATUS = "Texture images";
+const QUAKE_RENDER_BUNDLE_FLOOR_TEXTURE_PRELOAD_STATUS = "Floor textures";
 const QUAKE_RENDER_BUNDLE_TEXTURE_PRELOAD_CONCURRENCY = 48;
 const QUAKE_RENDER_BUNDLE_STYLESHEET_ONLY_PROPERTIES = new Set([
   "image-rendering",
@@ -734,6 +735,22 @@ export async function preloadQuakeRenderBundleAssets(
   }
 }
 
+export async function preloadQuakeRenderBundleFloorAssets(
+  renderBundle: QuakePreparedRenderBundle,
+  mapName: string,
+  progress?: QuakeRenderBundlePreloadProgress,
+): Promise<void> {
+  const urls = quakeRenderBundleFloorAssetUrls(renderBundle, mapName);
+  if (!urls.length) return;
+  const hasUncachedAsset = urls.some((url) => !renderBundleAssetPreloads.has(url));
+  const complete = hasUncachedAsset ? progress?.startTask(QUAKE_RENDER_BUNDLE_FLOOR_TEXTURE_PRELOAD_STATUS) : null;
+  try {
+    await preloadQuakeRenderBundleAssetUrls(urls);
+  } finally {
+    complete?.();
+  }
+}
+
 export function exposeQuakeRenderBundleAtlasPages(
   element: HTMLElement,
   renderBundle: QuakePreparedRenderBundle,
@@ -1286,6 +1303,14 @@ export function quakeRenderBundlePreloadAssetUrls(renderBundle: QuakePreparedRen
   return [...urls];
 }
 
+export function quakeRenderBundleFloorAssetUrls(renderBundle: QuakePreparedRenderBundle, mapName: string): string[] {
+  const normalizedMapName = mapName.trim().toLowerCase();
+  if (!normalizedMapName) return [];
+  const floorPrefix = `pc-${normalizedMapName}-floor-`;
+  return quakeRenderBundlePreloadAssetUrls(renderBundle)
+    .filter((url) => quakeRenderBundleUrlBasename(url).startsWith(floorPrefix));
+}
+
 function collectQuakeRenderBundleInlineAssetUrls(
   urls: Set<string>,
   styleText: string,
@@ -1311,6 +1336,11 @@ function normalizeQuakeRenderBundleCssUrl(value: string): string {
   return url.trim();
 }
 
+function quakeRenderBundleUrlBasename(url: string): string {
+  const path = url.split(/[?#]/, 1)[0] ?? "";
+  return path.slice(path.lastIndexOf("/") + 1);
+}
+
 function preloadQuakeRenderBundleStyle(renderBundle: QuakePreparedRenderBundle): Promise<void> {
   const key = quakeRenderBundleStyleKey(renderBundle);
   if (!key) return Promise.resolve();
diff --git a/src/runtime/shootables/enemyMovement.ts b/src/runtime/shootables/enemyMovement.ts
index fa1d4c0..5da99dd 100644
--- a/src/runtime/shootables/enemyMovement.ts
+++ b/src/runtime/shootables/enemyMovement.ts
@@ -393,6 +393,7 @@ export function createQuakeEnemyMovementRuntime(
     profile: QuakeMonsterCombatProfile,
     canSeePlayer: boolean,
   ): boolean {
+    if ((profile.chaseSpeed ?? 0) <= 0) return false;
     const stopDistance = canSeePlayer
       ? Math.max(profile.chaseStopDistance ?? profile.range * 0.72, PLAYER_RADIUS * 1.45)
       : 0;
diff --git a/src/runtime/world.ts b/src/runtime/world.ts
index a3b0f79..0f9be46 100644
--- a/src/runtime/world.ts
+++ b/src/runtime/world.ts
@@ -434,13 +434,7 @@ export function createQuakeWorldController(options: QuakeWorldControllerOptions)
     }
     const mountedLeafCountBefore = countMountedQuakeLeaves();
     const planningStartedAt = performance.now();
-    const leafMountRequests: Array<[QuakeFaceLeaf, boolean]> = [];
-    let scannedFaceLeafCount = 0;
-    for (const [faceIndex, leaves] of faceLeaves) {
-      const visible = visibleFaces.has(faceIndex);
-      scannedFaceLeafCount += leaves.length;
-      for (const leaf of leaves) leafMountRequests.push([leaf, visible]);
-    }
+    const { leafMountRequests, scannedFaceLeafCount } = buildQuakeLeafVisibilityMountRequests(faceLeaves, visibleFaces);
     const planningMs = performance.now() - planningStartedAt;
     visibleFaceKey = nextKey;
     visibleLeafIndex = nextLeafIndex;
@@ -1488,6 +1482,22 @@ function normalizedQuakeLeafVisibilityFaceIndexes(metadata: QuakePreparedRenderB
     .sort((a, b) => a - b);
 }
 
+export function buildQuakeLeafVisibilityMountRequests(
+  faceLeaves: Map<number, QuakeFaceLeaf[]>,
+  visibleFaces: Set<number>,
+): { leafMountRequests: Map<QuakeFaceLeaf, boolean>; scannedFaceLeafCount: number } {
+  const leafMountRequests = new Map<QuakeFaceLeaf, boolean>();
+  let scannedFaceLeafCount = 0;
+  for (const [faceIndex, leaves] of faceLeaves) {
+    const visible = visibleFaces.has(faceIndex);
+    scannedFaceLeafCount += leaves.length;
+    for (const leaf of leaves) {
+      leafMountRequests.set(leaf, visible || leafMountRequests.get(leaf) === true);
+    }
+  }
+  return { leafMountRequests, scannedFaceLeafCount };
+}
+
 function clampedIntegerParam(value: string | null, fallback: number, min: number, max: number): number {
   if (value === null) return fallback;
   const parsed = Number.parseInt(value, 10);
diff --git a/test/runtime/mobileControls.test.mjs b/test/runtime/mobileControls.test.mjs
index 69ef804..69573ec 100644
--- a/test/runtime/mobileControls.test.mjs
+++ b/test/runtime/mobileControls.test.mjs
@@ -36,6 +36,39 @@ test("mobile move stick handles pointer input and updates the visible nub", () =
   }
 });
 
+test("mobile move stick uses the touch-down point as the neutral anchor", () => {
+  const harness = createMobileControlsHarness();
+  try {
+    const startX = harness.centerX - 30;
+    const startY = harness.centerY + 20;
+    harness.moveZone.dispatchEvent(pointer(harness.window, "pointerdown", startX, startY, 12, 1));
+    assert.deepEqual(harness.analogSamples.at(-1), [0, 0]);
+    assert.equal(harness.stick.style.left, `${startX - 18}px`);
+    assert.equal(harness.stick.style.top, `${startY - 100}px`);
+    assert.equal(harness.front.style.transform, "translate(0px, 0px)");
+
+    harness.moveZone.dispatchEvent(pointer(harness.window, "pointermove", startX, startY - 72, 12, 1));
+    assert.deepEqual(harness.analogSamples.at(-1), [0, 1]);
+    assert.equal(harness.front.style.transform, "translate(0px, -27px)");
+
+    harness.moveZone.dispatchEvent(pointer(harness.window, "pointerup", startX, startY - 72, 12, 0));
+    assertMoveReleased(harness);
+    assert.equal(harness.stick.style.left, "72px");
+    assert.equal(harness.stick.style.top, "72px");
+
+    const secondStartX = harness.centerX + 24;
+    const secondStartY = harness.centerY - 18;
+    harness.moveZone.dispatchEvent(pointer(harness.window, "pointerdown", secondStartX, secondStartY, 13, 1));
+    assert.deepEqual(harness.analogSamples.at(-1), [0, 0]);
+    assert.equal(harness.stick.style.left, `${secondStartX - 18}px`);
+    assert.equal(harness.stick.style.top, `${secondStartY - 100}px`);
+    harness.moveZone.dispatchEvent(pointer(harness.window, "pointerup", secondStartX, secondStartY, 13, 0));
+    assertMoveReleased(harness);
+  } finally {
+    harness.restore();
+  }
+});
+
 test("mobile move stick clears on cancellation, lost capture, and explicit app cleanup", () => {
   const harness = createMobileControlsHarness();
   try {
@@ -205,8 +238,8 @@ function assertVisualReleased(harness) {
 }
 
 function assertMoveVisualGeometry(harness) {
-  assert.equal(harness.stick.style.left, "50%");
-  assert.equal(harness.stick.style.top, "50%");
+  assert.equal(harness.stick.style.left, "72px");
+  assert.equal(harness.stick.style.top, "72px");
   assert.equal(harness.stick.style.width, "108px");
   assert.equal(harness.stick.style.height, "108px");
   assert.equal(harness.stick.style.marginLeft, "-54px");
diff --git a/test/runtime/renderBundlePreloadUrls.test.mjs b/test/runtime/renderBundlePreloadUrls.test.mjs
index b415a74..9dcf546 100644
--- a/test/runtime/renderBundlePreloadUrls.test.mjs
+++ b/test/runtime/renderBundlePreloadUrls.test.mjs
@@ -7,6 +7,7 @@ import { importTsModule } from "../importTsModule.mjs";
 
 const {
   quakeRenderBundleElementAssetUrls,
+  quakeRenderBundleFloorAssetUrls,
   quakeRenderBundlePreloadAssetUrls,
 } = await importTsModule("src/runtime/renderBundleMesh.ts");
 
@@ -48,6 +49,22 @@ test("render bundles without complete asset URLs fail before runtime preload", (
   );
 });
 
+test("map floor preloads select only direct floor component assets", () => {
+  const urls = quakeRenderBundleFloorAssetUrls(renderBundle({
+    assetUrls: [
+      "/q/b/e1m1/a0.avif",
+      "/q/b/e1m1/pc-e1m1-floor-p658-s0-ground1_2-c164.png",
+      "/q/b/e1m1/pc-e1m1-ceiling-p75-s1-tech01_6-c43.png",
+      "/q/b/e1m1/pc-e1m1-wall-p12-s0-metal1_2-c8.png",
+      "/q/b/e1m2/pc-e1m2-floor-p10-s0-ground1_2-c1.png",
+      "/q/b/e1m1/l3251s.png",
+    ],
+    assetUrlsComplete: true,
+  }), "E1M1");
+
+  assert.deepEqual(urls, ["/q/b/e1m1/pc-e1m1-floor-p658-s0-ground1_2-c164.png"]);
+});
+
 test("mounted render bundle leaves expose direct URLs and atlas root-var URLs for preload", () => {
   const window = new Window();
   const mesh = window.document.createElement("div");
diff --git a/test/runtime/worldVisibilityMountRequests.test.mjs b/test/runtime/worldVisibilityMountRequests.test.mjs
new file mode 100644
index 0000000..4a2f176
--- /dev/null
+++ b/test/runtime/worldVisibilityMountRequests.test.mjs
@@ -0,0 +1,28 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { importTsModule } from "../importTsModule.mjs";
+
+const {
+  buildQuakeLeafVisibilityMountRequests,
+} = await importTsModule("src/runtime/world.ts");
+
+test("merged world leaves stay mounted when any indexed face is visible", () => {
+  const mergedLeaf = { leafIndex: 2804 };
+  const hiddenLeaf = { leafIndex: 2020 };
+  const faceLeaves = new Map([
+    [3345, [mergedLeaf]],
+    [3346, [mergedLeaf]],
+    [4286, [mergedLeaf]],
+    [2395, [hiddenLeaf]],
+  ]);
+
+  const { leafMountRequests, scannedFaceLeafCount } = buildQuakeLeafVisibilityMountRequests(
+    faceLeaves,
+    new Set([3345]),
+  );
+
+  assert.equal(scannedFaceLeafCount, 4);
+  assert.equal(leafMountRequests.get(mergedLeaf), true);
+  assert.equal(leafMountRequests.get(hiddenLeaf), false);
+});