diff --git a/src/lib/stores/ae_events_stores.ts b/src/lib/stores/ae_events_stores.ts
index ef0f591a..a1b61ae2 100644
--- a/src/lib/stores/ae_events_stores.ts
+++ b/src/lib/stores/ae_events_stores.ts
@@ -167,6 +167,16 @@ const events_local_data_struct: key_val = {
         time_format: 'time_12_short',
         time_hours: 12, // 12 or 24
 
+        sync_intervals: {
+            event: 90000,
+            device: 60000,
+            location: 30000,
+            session: 15000,
+            presentation: 45000,
+            presenter: 60000,
+            file_sync: 10000
+        },
+
         slct: {
             event_id: null,
             event_location_id: null,
diff --git a/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_sync_timers.svelte b/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_sync_timers.svelte
index ca70722f..c28eb7f3 100644
--- a/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_sync_timers.svelte
+++ b/src/routes/events/[event_id]/(launcher)/cfg_components/launcher_cfg_sync_timers.svelte
@@ -18,7 +18,7 @@
         2} | Loops: Active"
 >
     <!-- Content omitted for brevity, preserved in file -->
-    {#if $ae_loc.native_device}
+    {#if $events_loc.launcher.sync_intervals}
         <div class="grid grid-cols-1 gap-3">
             <!-- Technical Timers (Edit Mode Only) -->
             {#if $ae_loc.edit_mode}
@@ -34,8 +34,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_loop_period
+                                    $events_loc.launcher.sync_intervals.event
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -47,8 +46,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_device_loop_period
+                                    $events_loc.launcher.sync_intervals.device
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -60,8 +58,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_location_loop_period
+                                    $events_loc.launcher.sync_intervals.location
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -73,8 +70,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_session_loop_period
+                                    $events_loc.launcher.sync_intervals.session
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -86,8 +82,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_presentation_loop_period
+                                    $events_loc.launcher.sync_intervals.presentation
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -99,8 +94,7 @@
                             <input
                                 type="number"
                                 bind:value={
-                                    $ae_loc.native_device
-                                        .check_event_presenter_loop_period
+                                    $events_loc.launcher.sync_intervals.presenter
                                 }
                                 class="input input-sm text-[10px] h-7 preset-tonal-surface"
                             />
@@ -144,7 +138,7 @@
                         <span>Event Sync:</span>
                         <span
                             >{(
-                                $ae_loc.native_device.check_event_loop_period /
+                                $events_loc.launcher.sync_intervals.event /
                                 1000
                             ).toFixed(1)}s</span
                         >
@@ -155,8 +149,7 @@
                         <span>Room Monitor:</span>
                         <span
                             >{(
-                                $ae_loc.native_device
-                                    .check_event_location_loop_period / 1000
+                                $events_loc.launcher.sync_intervals.location / 1000
                             ).toFixed(1)}s</span
                         >
                     </div>
@@ -165,7 +158,7 @@
                     >
                         <span>Prefix Sharding:</span>
                         <span
-                            >{$ae_loc.native_device.hash_prefix_length || 2} chars</span
+                            >{$ae_loc.native_device?.hash_prefix_length || 2} chars</span
                         >
                     </div>
                 </div>
diff --git a/src/routes/events/[event_id]/(launcher)/launcher_background_sync.svelte b/src/routes/events/[event_id]/(launcher)/launcher_background_sync.svelte
index 5ec6a72b..c48af058 100644
--- a/src/routes/events/[event_id]/(launcher)/launcher_background_sync.svelte
+++ b/src/routes/events/[event_id]/(launcher)/launcher_background_sync.svelte
@@ -5,7 +5,7 @@
      */
     import { onMount, onDestroy } from 'svelte';
     import { ae_loc, ae_api } from '$lib/stores/ae_stores';
-    import { events_slct, events_sess } from '$lib/stores/ae_events_stores';
+    import { events_loc, events_slct, events_sess } from '$lib/stores/ae_events_stores';
     import { events_func } from '$lib/ae_events_functions';
     import { ae_util } from '$lib/ae_utils/ae_utils';
     import { db_events } from '$lib/ae_events/db_events';
@@ -67,14 +67,15 @@
         }
 
         const dev = $ae_loc.native_device || {};
+        const cfg = $events_loc.launcher.sync_intervals || {};
 
-        // Load timings from device config
-        loop_info.event = dev.check_event_loop_period || 120000;
-        loop_info.device = dev.check_event_device_loop_period || 90000;
-        loop_info.location = dev.check_event_location_loop_period || 60000;
-        loop_info.session = dev.check_event_session_loop_period || 45000;
-        loop_info.presentation = dev.check_event_presentation_loop_period || 90000;
-        loop_info.presenter = dev.check_event_presenter_loop_period || 45000;
+        // Load timings from persistent config, with fallbacks to device config or defaults
+        loop_info.event = cfg.event || dev.check_event_loop_period || 90000;
+        loop_info.device = cfg.device || dev.check_event_device_loop_period || 60000;
+        loop_info.location = cfg.location || dev.check_event_location_loop_period || 30000;
+        loop_info.session = cfg.session || dev.check_event_session_loop_period || 15000;
+        loop_info.presentation = cfg.presentation || dev.check_event_presentation_loop_period || 45000;
+        loop_info.presenter = cfg.presenter || dev.check_event_presenter_loop_period || 60000;
 
         // 1. Structural/Metadata Loops
         timer__event = setInterval(() => refresh_event_data(), loop_info.event);
@@ -87,7 +88,7 @@
         timer__presenter = setInterval(() => refresh_presenter_data(), loop_info.presenter);
 
         // 3. Native File Sync Loop (Dexie -> Disk)
-        const sync_period = dev.check_file_sync_loop_period || 10000;
+        const sync_period = cfg.file_sync || dev.check_file_sync_loop_period || 10000;
         timer__file_sync = setInterval(() => run_sync_cycle(), sync_period);
 
         // Immediate first run for metadata