diff --git a/packages/desktop/e2e/browser-throttling.e2e.cjs b/packages/desktop/e2e/browser-throttling.e2e.cjs
new file mode 100644
index 0000000000..c04d33ff99
--- /dev/null
+++ b/packages/desktop/e2e/browser-throttling.e2e.cjs
@@ -0,0 +1,27 @@
+const fs = require("node:fs");
+const os = require("node:os");
+const path = require("node:path");
+const { spawnSync } = require("node:child_process");
+const electron = require("electron");
+
+// Chromium can recreate profile files during shutdown. The parent owns cleanup
+// after Electron exits, including failed assertions and capture timeouts.
+const profile = fs.mkdtempSync(path.join(os.tmpdir(), "paseo-browser-throttling-profile-"));
+try {
+  const result = spawnSync(
+    electron,
+    [
+      "--no-sandbox",
+      path.join(__dirname, "browser-throttling.electron.cjs"),
+      ...process.argv.slice(2),
+    ],
+    {
+      stdio: "inherit",
+      env: { ...process.env, PASEO_BROWSER_THROTTLING_PROFILE_DIR: profile },
+    },
+  );
+  if (result.error) throw result.error;
+  process.exitCode = result.status ?? 1;
+} finally {
+  fs.rmSync(profile, { recursive: true, force: true });
+}
diff --git a/packages/desktop/e2e/browser-throttling.electron.cjs b/packages/desktop/e2e/browser-throttling.electron.cjs
index 3e6fe79a8b..bc71e68a7a 100644
--- a/packages/desktop/e2e/browser-throttling.electron.cjs
+++ b/packages/desktop/e2e/browser-throttling.electron.cjs
@@ -13,7 +13,8 @@ const output =
   process.env.PASEO_BROWSER_THROTTLING_ARTIFACT_DIR ||
   fs.mkdtempSync(path.join(os.tmpdir(), "paseo-browser-throttling-"));
 fs.mkdirSync(output, { recursive: true });
-const profile = fs.mkdtempSync(path.join(os.tmpdir(), "paseo-browser-throttling-profile-"));
+const profile = process.env.PASEO_BROWSER_THROTTLING_PROFILE_DIR;
+assert.ok(profile, "Run through test:e2e:browser-throttling so the launcher owns profile cleanup");
 app.setPath("userData", profile);
 if (process.platform === "darwin") app.setActivationPolicy("accessory");
 const measurements = [];
@@ -157,4 +158,3 @@ app
     console.error(error);
     app.exit(1);
   });
-app.on("quit", () => fs.rmSync(profile, { recursive: true, force: true }));
diff --git a/packages/desktop/package.json b/packages/desktop/package.json
index 1174c74457..64cd20bf50 100644
--- a/packages/desktop/package.json
+++ b/packages/desktop/package.json
@@ -22,7 +22,7 @@
     "dev:win": "powershell ./scripts/dev.ps1",
     "test:e2e:renderer": "cross-env E2E_DESKTOP_RUNTIME=1 playwright test --config=playwright.config.ts --project=desktop",
     "test:e2e:browser-tabs": "npm run build:main && node ./e2e/browser-tabs.e2e.mjs",
-    "test:e2e:browser-throttling": "npm run build:main && electron --no-sandbox e2e/browser-throttling.electron.cjs",
+    "test:e2e:browser-throttling": "npm run build:main && node e2e/browser-throttling.e2e.cjs",
     "verify:electron-cdp": "node ./scripts/verify-electron-cdp.mjs",
     "test": "vitest run --exclude \"e2e/**\"",
     "typecheck": "tsgo --noEmit -p tsconfig.json"