diff --git a/src/features/tmux-installer/main/infrastructure/runtime/TmuxPlatformCommandExecutor.ts b/src/features/tmux-installer/main/infrastructure/runtime/TmuxPlatformCommandExecutor.ts
index c7ef6b81..7d3f66f3 100644
--- a/src/features/tmux-installer/main/infrastructure/runtime/TmuxPlatformCommandExecutor.ts
+++ b/src/features/tmux-installer/main/infrastructure/runtime/TmuxPlatformCommandExecutor.ts
@@ -45,7 +45,7 @@ export interface RuntimeProcessTableRow {
  * before acting. Keep this cache long enough to collapse bursts from concurrent
  * team refreshes, but short enough that stale "alive" UI is brief.
  */
-const RUNTIME_PROCESS_TABLE_CACHE_TTL_MS = 10_000;
+const RUNTIME_PROCESS_TABLE_CACHE_TTL_MS = 30_000;
 
 interface RuntimeProcessTableCacheEntry {
   rows: RuntimeProcessTableRow[];