diff --git a/README.md b/README.md
index e945bba..668f8cc 100644
--- a/README.md
+++ b/README.md
@@ -210,8 +210,10 @@ Per-display option:
 
 Implementation notes:
 
-- Headlines are fetched server-side via `GET /api/display/<token>/ticker` and cached briefly.
-- The player reads the company ticker settings via `GET /api/display/<token>/playlist` and refreshes headlines periodically.
+- Headlines are fetched server-side via `GET /api/display/<token>/ticker` and cached in-memory.
+- The player reads the company ticker settings via `GET /api/display/<token>/playlist`.
+- The player auto-refreshes headlines without restart on a **long interval** (default: **12 hours**, override via `?ticker_poll=seconds`).
+- Server-side cache TTL defaults to **6 hours** (override via env var `TICKER_CACHE_TTL_SECONDS`).
 
 ## SMTP / Forgot password
 
@@ -290,5 +292,6 @@ If the reset email is not received:
 
 
 
+
 
 
diff --git a/app/routes/api.py b/app/routes/api.py
index ca04a1d..faea6a7 100644
--- a/app/routes/api.py
+++ b/app/routes/api.py
@@ -1,6 +1,7 @@
 from datetime import datetime, timedelta
 import hashlib
 import json
+import os
 import time
 import re
 from urllib.parse import urlparse
@@ -20,7 +21,18 @@ MAX_ACTIVE_SESSIONS_PER_DISPLAY = 3
 SESSION_TTL_SECONDS = 90
 
 # RSS ticker cache (in-memory; OK for this small app; avoids hammering feeds)
-TICKER_CACHE_TTL_SECONDS = 120
+#
+# Default is intentionally long because displays can refresh headlines on a long interval
+# (e.g., twice per day) and we don't want many displays to re-fetch the same feed.
+# Override via env var `TICKER_CACHE_TTL_SECONDS`.
+def _env_int(name: str, default: int) -> int:
+    try:
+        return int(os.environ.get(name, "") or default)
+    except (TypeError, ValueError):
+        return default
+
+
+TICKER_CACHE_TTL_SECONDS = max(10, _env_int("TICKER_CACHE_TTL_SECONDS", 6 * 60 * 60))
 _TICKER_CACHE: dict[str, dict] = {}
 
 
diff --git a/app/static/styles.css b/app/static/styles.css
index e713e1c..6d708cc 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -280,6 +280,13 @@ h1, h2, h3, .display-1, .display-2, .display-3 {
   background: #000;
 }
 
+/* Mobile: dashboard display previews are heavy (iframes). Hide them on small screens. */
+@media (max-width: 768px) {
+  .display-gallery-card .display-preview {
+    display: none;
+  }
+}
+
 @media (max-width: 768px) {
   .display-gallery-grid {
     grid-template-columns: 1fr;
diff --git a/app/templates/company/dashboard.html b/app/templates/company/dashboard.html
index 574423a..1c24715 100644
--- a/app/templates/company/dashboard.html
+++ b/app/templates/company/dashboard.html
@@ -76,7 +76,8 @@
                       <iframe
                         title="Preview — {{ d.name }}"
                         data-display-id="{{ d.id }}"
-                        src="{{ url_for('display.display_player', token=d.token) }}?preview=1"
+                        class="js-display-preview"
+                        data-preview-src="{{ url_for('display.display_player', token=d.token) }}?preview=1"
                         loading="lazy"
                         referrerpolicy="no-referrer"
                         style="width: 100%; height: 100%; border: 0;"
@@ -241,17 +242,23 @@
 
       function refreshPreviewIframe(displayId) {
         const iframe = document.querySelector(`iframe[data-display-id="${displayId}"]`);
-        if (!iframe || !iframe.src) return;
+        // Previews are disabled on mobile.
+        if (window.matchMedia && window.matchMedia('(max-width: 768px)').matches) return;
+        if (!iframe) return;
         try {
-          const u = new URL(iframe.src, window.location.origin);
+          const baseSrc = iframe.dataset.previewSrc || iframe.src;
+          if (!baseSrc) return;
+          const u = new URL(baseSrc, window.location.origin);
           // Ensure preview flag is present (and bust cache).
           u.searchParams.set('preview', '1');
           u.searchParams.set('_ts', String(Date.now()));
           iframe.src = u.toString();
         } catch (e) {
           // Fallback: naive cache buster
-          const sep = iframe.src.includes('?') ? '&' : '?';
-          iframe.src = `${iframe.src}${sep}_ts=${Date.now()}`;
+          const baseSrc = iframe.dataset.previewSrc || iframe.src;
+          if (!baseSrc) return;
+          const sep = baseSrc.includes('?') ? '&' : '?';
+          iframe.src = `${baseSrc}${sep}_ts=${Date.now()}`;
         }
       }
 
@@ -467,6 +474,31 @@
       if (plSaveBtn) {
         plSaveBtn.addEventListener('click', savePlaylists);
       }
+
+      // Disable dashboard previews on small screens (mobile): don't even set iframe src.
+      function loadDashboardPreviewsIfDesktop() {
+        const isMobile = window.matchMedia && window.matchMedia('(max-width: 768px)').matches;
+        if (isMobile) return;
+        document.querySelectorAll('iframe.js-display-preview[data-preview-src]').forEach((iframe) => {
+          if (!iframe.src || iframe.src === 'about:blank') {
+            iframe.src = iframe.dataset.previewSrc;
+          }
+        });
+      }
+      loadDashboardPreviewsIfDesktop();
+
+      // If user rotates/resizes from mobile -> desktop, load previews then.
+      if (window.matchMedia) {
+        const mql = window.matchMedia('(max-width: 768px)');
+        const onChange = () => {
+          if (!mql.matches) loadDashboardPreviewsIfDesktop();
+        };
+        if (typeof mql.addEventListener === 'function') {
+          mql.addEventListener('change', onChange);
+        } else if (typeof mql.addListener === 'function') {
+          mql.addListener(onChange);
+        }
+      }
     })();
   </script>
 {% endblock %}
diff --git a/app/templates/display/player.html b/app/templates/display/player.html
index d810f2f..e1371ab 100644
--- a/app/templates/display/player.html
+++ b/app/templates/display/player.html
@@ -203,6 +203,14 @@
       let tickerInterval = null;
       let tickerLastHeadlines = [];
 
+      function getTickerPollSeconds() {
+        // Refresh headlines on a long interval.
+        // Default: 12 hours (twice per day).
+        // Override via ?ticker_poll=seconds.
+        const tp = parseInt(new URLSearchParams(window.location.search).get('ticker_poll') || '', 10);
+        return Number.isFinite(tp) && tp > 0 ? tp : (12 * 60 * 60);
+      }
+
       const ANIM_MS = 420;
 
       function getTransitionMode(pl) {
@@ -391,8 +399,7 @@
           clearInterval(tickerInterval);
           tickerInterval = null;
         }
-        // Refresh every 2 minutes; server caches too.
-        tickerInterval = setInterval(refreshTickerOnce, 120 * 1000);
+        tickerInterval = setInterval(refreshTickerOnce, getTickerPollSeconds() * 1000);
       }
 
       function clearStage() {