diff --git a/frontend/tests/setup.js b/frontend/tests/setup.js
index 7b0828b..982548f 100644
--- a/frontend/tests/setup.js
+++ b/frontend/tests/setup.js
@@ -1 +1,13 @@
 import '@testing-library/jest-dom';
+
+// Suppress noisy act() warnings from async state updates in useEffect hooks.
+// All assertions still run — this only silences the console.error spam that
+// causes OOM crashes when running the full suite.
+const originalError = console.error;
+beforeAll(() => {
+  console.error = (...args) => {
+    if (typeof args[0] === 'string' && args[0].includes('not wrapped in act')) return;
+    originalError(...args);
+  };
+});
+afterAll(() => { console.error = originalError; });