diff --git a/apps/sim/app/(landing)/components/cta/components/cta-chat.tsx b/apps/sim/app/(landing)/components/cta/components/cta-chat.tsx
deleted file mode 100644
index 21f62a5a1ef..00000000000
--- a/apps/sim/app/(landing)/components/cta/components/cta-chat.tsx
+++ /dev/null
@@ -1,32 +0,0 @@
-'use client'
-
-import { useState } from 'react'
-import { LandingPreviewChatInput } from '@/app/(landing)/components/landing-preview/components/landing-preview-chat/chat-input'
-import { useLandingSubmit } from '@/app/(landing)/components/landing-preview/hooks/use-landing-submit'
-import { useAnimatedPlaceholder } from '@/hooks/use-animated-placeholder'
-
-/**
- * Pre-footer CTA chat input - the page's final conversion surface. A real,
- * interactive copy of the Mothership chat input: the visitor types their first
- * prompt, and {@link useLandingSubmit} stashes it in browser storage and routes
- * to `/signup` so the message survives the auth hop and lands them in Sim. The
- * placeholder cycles the same "Ask Sim to …" examples as the product's home
- * empty state, so the CTA reads as the front door to the workspace.
- */
-export function CtaChat() {
-  const [value, setValue] = useState('')
-  const placeholder = useAnimatedPlaceholder()
-  const submit = useLandingSubmit()
-
-  return (
-    <div className='w-full max-w-[36rem]'>
-      <LandingPreviewChatInput
-        value={value}
-        onChange={setValue}
-        onSubmit={() => submit(value)}
-        placeholder={placeholder}
-        shadow
-      />
-    </div>
-  )
-}
diff --git a/apps/sim/app/(landing)/components/hero/components/hero-visual/hero-visual.tsx b/apps/sim/app/(landing)/components/hero/components/hero-visual/hero-visual.tsx
index 9fb215f17cc..fb3ccaff2ca 100644
--- a/apps/sim/app/(landing)/components/hero/components/hero-visual/hero-visual.tsx
+++ b/apps/sim/app/(landing)/components/hero/components/hero-visual/hero-visual.tsx
@@ -913,11 +913,16 @@ export function HeroVisual() {
     return () => cancelAnimationFrame(raf)
   }, [loaderPainting, paintFrame])
 
+  const phaseRef = useRef<Phase>(phase)
   useEffect(() => {
-    const onResize = () => positionCursor(phase, true)
+    phaseRef.current = phase
+  }, [phase])
+
+  useEffect(() => {
+    const onResize = () => positionCursor(phaseRef.current, true)
     window.addEventListener('resize', onResize)
     return () => window.removeEventListener('resize', onResize)
-  }, [phase, positionCursor])
+  }, [positionCursor])
 
   useEffect(
     () => () => {
diff --git a/apps/sim/app/(landing)/components/landing-preview/landing-preview-mount.tsx b/apps/sim/app/(landing)/components/landing-preview/landing-preview-mount.tsx
index 204d0cc50ad..58d82704c2a 100644
--- a/apps/sim/app/(landing)/components/landing-preview/landing-preview-mount.tsx
+++ b/apps/sim/app/(landing)/components/landing-preview/landing-preview-mount.tsx
@@ -1,18 +1,30 @@
 'use client'
 
+import { useEffect, useRef, useState } from 'react'
 import dynamic from 'next/dynamic'
 import type { SidebarView } from '@/app/(landing)/components/landing-preview/components/landing-preview-sidebar/landing-preview-sidebar'
 
+/** Dimension-stable placeholder sized to the preview's exact footprint (zero CLS). */
+const PLACEHOLDER_CLASS = 'aspect-[1116/615] w-full rounded bg-[var(--surface-1)]'
+
+/**
+ * Load the preview chunk a little before it scrolls into view so it's ready by
+ * the time the user reaches it, without paying for it on initial load.
+ */
+const PRELOAD_ROOT_MARGIN = '400px'
+
 /**
  * Client mount for the {@link LandingPreview} - the heavy, animated workspace
  * island (framer-motion + reactflow). Isolated here so the sections that show it
  * stay Server Components: only this leaf is `'use client'`.
  *
  * Loaded with `ssr: false` so the framer-motion/reactflow bundle never ships in
- * the server-rendered HTML, and behind a dimension-stable placeholder sized to
- * the preview's exact `aspect-[1116/615]` footprint so there is zero layout
- * shift while it streams in. The placeholder fills with the canvas surface
- * (`--surface-1`) so there is no flash as the island mounts.
+ * the server-rendered HTML, and **gated on viewport proximity**: the chunk only
+ * downloads once an {@link IntersectionObserver} reports the mount is near the
+ * viewport, so the below-the-fold previews don't pull the heavy bundle into the
+ * initial homepage load. A dimension-stable placeholder (the preview's exact
+ * `aspect-[1116/615]` footprint, filled with the canvas surface) holds the space
+ * before and during load, so there is zero layout shift or flash.
  */
 const LandingPreview = dynamic(
   () =>
@@ -21,7 +33,7 @@ const LandingPreview = dynamic(
     ),
   {
     ssr: false,
-    loading: () => <div className='aspect-[1116/615] w-full rounded bg-[var(--surface-1)]' />,
+    loading: () => <div className={PLACEHOLDER_CLASS} />,
   }
 )
 
@@ -35,5 +47,36 @@ interface LandingPreviewMountProps {
 }
 
 export function LandingPreviewMount({ autoplay, view, workflowId }: LandingPreviewMountProps) {
-  return <LandingPreview autoplay={autoplay} view={view} workflowId={workflowId} />
+  const ref = useRef<HTMLDivElement>(null)
+  const [inView, setInView] = useState(false)
+
+  useEffect(() => {
+    if (inView) return
+    // Graceful degradation: without IntersectionObserver support, load eagerly
+    // rather than leave the preview stuck on its placeholder.
+    if (typeof IntersectionObserver === 'undefined') {
+      setInView(true)
+      return
+    }
+    const el = ref.current
+    if (!el) return
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) setInView(true)
+      },
+      { rootMargin: PRELOAD_ROOT_MARGIN }
+    )
+    observer.observe(el)
+    return () => observer.disconnect()
+  }, [inView])
+
+  return (
+    <div ref={ref}>
+      {inView ? (
+        <LandingPreview autoplay={autoplay} view={view} workflowId={workflowId} />
+      ) : (
+        <div className={PLACEHOLDER_CLASS} />
+      )}
+    </div>
+  )
 }
diff --git a/apps/sim/app/(landing)/integrations/components/integration-card.tsx b/apps/sim/app/(landing)/integrations/components/integration-card.tsx
index 646e47417b3..3749dd00a94 100644
--- a/apps/sim/app/(landing)/integrations/components/integration-card.tsx
+++ b/apps/sim/app/(landing)/integrations/components/integration-card.tsx
@@ -1,4 +1,5 @@
 import type { ComponentType, SVGProps } from 'react'
+import { memo } from 'react'
 import Link from 'next/link'
 import type { Integration } from '@/lib/integrations'
 import { ChevronArrow } from '@/app/(landing)/components/chevron-arrow'
@@ -46,7 +47,10 @@ export function IntegrationCard({ integration, IconComponent }: IntegrationItemP
  * Integration list row - matches blog remaining post pattern.
  * Each row followed by an h-px divider.
  */
-export function IntegrationRow({ integration, IconComponent }: IntegrationItemProps) {
+export const IntegrationRow = memo(function IntegrationRow({
+  integration,
+  IconComponent,
+}: IntegrationItemProps) {
   const { slug, name, description, bgColor } = integration
 
   return (
@@ -80,4 +84,4 @@ export function IntegrationRow({ integration, IconComponent }: IntegrationItemPr
       <div className='h-px w-full bg-[var(--border)]' />
     </>
   )
-}
+})
diff --git a/apps/sim/app/(landing)/integrations/components/integration-grid.tsx b/apps/sim/app/(landing)/integrations/components/integration-grid.tsx
index a78827c500f..a226fec75cc 100644
--- a/apps/sim/app/(landing)/integrations/components/integration-grid.tsx
+++ b/apps/sim/app/(landing)/integrations/components/integration-grid.tsx
@@ -1,5 +1,6 @@
 'use client'
 
+import { useMemo } from 'react'
 import { ChipInput, Search } from '@sim/emcn'
 import { debounce, useQueryStates } from 'nuqs'
 import { blockTypeToIconMap, formatIntegrationType, type Integration } from '@/lib/integrations'
@@ -28,29 +29,42 @@ export function IntegrationGrid({ integrations }: IntegrationGridProps) {
   )
   const activeCategory = category || null
 
-  const counts = new Map<string, number>()
-  for (const i of integrations) {
-    if (i.integrationType) {
-      counts.set(i.integrationType, (counts.get(i.integrationType) || 0) + 1)
+  // Category facets and a per-integration lowercased search index, derived once
+  // from the (stable) integration list instead of rebuilt on every keystroke.
+  // The index keeps each searchable field as its own entry so matching stays
+  // identical to a per-field `includes` (no cross-field boundary matches).
+  const { availableCategories, searchIndex } = useMemo(() => {
+    const counts = new Map<string, number>()
+    const searchIndex = new Map<string, string[]>()
+    for (const i of integrations) {
+      if (i.integrationType) {
+        counts.set(i.integrationType, (counts.get(i.integrationType) || 0) + 1)
+      }
+      searchIndex.set(i.type, [
+        i.name.toLowerCase(),
+        i.description.toLowerCase(),
+        ...i.operations.flatMap((op) => [op.name.toLowerCase(), op.description.toLowerCase()]),
+        ...i.triggers.map((t) => t.name.toLowerCase()),
+      ])
     }
-  }
-  const availableCategories = Array.from(counts.entries())
-    .sort((a, b) => b[1] - a[1])
-    .map(([key]) => key)
+    return {
+      availableCategories: Array.from(counts.entries())
+        .sort((a, b) => b[1] - a[1])
+        .map(([key]) => key),
+      searchIndex,
+    }
+  }, [integrations])
 
   const q = query.trim().toLowerCase()
-  const filtered = integrations.filter((i) => {
-    if (activeCategory && i.integrationType !== activeCategory) return false
-    if (!q) return true
-    return (
-      i.name.toLowerCase().includes(q) ||
-      i.description.toLowerCase().includes(q) ||
-      i.operations.some(
-        (op) => op.name.toLowerCase().includes(q) || op.description.toLowerCase().includes(q)
-      ) ||
-      i.triggers.some((t) => t.name.toLowerCase().includes(q))
-    )
-  })
+  const filtered = useMemo(
+    () =>
+      integrations.filter((i) => {
+        if (activeCategory && i.integrationType !== activeCategory) return false
+        if (!q) return true
+        return searchIndex.get(i.type)?.some((field) => field.includes(q)) ?? false
+      }),
+    [integrations, searchIndex, q, activeCategory]
+  )
 
   return (
     <div>
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