diff --git a/.github/workflows/tests_others.yml b/.github/workflows/tests_others.yml
index 04115ce693..783f3fe2ff 100644
--- a/.github/workflows/tests_others.yml
+++ b/.github/workflows/tests_others.yml
@@ -88,11 +88,15 @@ jobs:
         flakiness-subscription-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_SUBSCRIPTION_ID }}
 
   test_clock_frozen_time_linux:
-    name: Frozen time library
+    name: time library - ${{ matrix.clock }}
     environment: ${{ github.event_name == 'push' && 'allow-uploading-flakiness-results' || null }}
     permissions:
       id-token: write   # This is required for OIDC login (azure/login) to succeed
       contents: read    # This is required for actions/checkout to succeed
+    strategy:
+      fail-fast: false
+      matrix:
+        clock: [frozen, realtime]
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
@@ -101,32 +105,36 @@ jobs:
         node-version: 20
         browsers-to-install: chromium
         command: npm run test -- --project=chromium-*
-        bot-name: "frozen-time-library-chromium-linux"
+        bot-name: "${{ matrix.clock }}-time-library-chromium-linux"
         flakiness-client-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_CLIENT_ID }}
         flakiness-tenant-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_TENANT_ID }}
         flakiness-subscription-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_SUBSCRIPTION_ID }}
       env:
-        PW_FREEZE_TIME: 1
+        PW_CLOCK: ${{ matrix.clock }}
 
   test_clock_frozen_time_test_runner:
-    name: Frozen time test runner
+    name: time test runner - ${{ matrix.clock }}
     environment: ${{ github.event_name == 'push' && 'allow-uploading-flakiness-results' || null }}
     runs-on: ubuntu-22.04
     permissions:
       id-token: write   # This is required for OIDC login (azure/login) to succeed
       contents: read    # This is required for actions/checkout to succeed
+    strategy:
+      fail-fast: false
+      matrix:
+        clock: [frozen, realtime]
     steps:
     - uses: actions/checkout@v4
     - uses: ./.github/actions/run-test
       with:
         node-version: 20
         command: npm run ttest
-        bot-name: "frozen-time-runner-chromium-linux"
+        bot-name: "${{ matrix.clock }}-time-runner-chromium-linux"
         flakiness-client-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_CLIENT_ID }}
         flakiness-tenant-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_TENANT_ID }}
         flakiness-subscription-id: ${{ secrets.AZURE_FLAKINESS_DASHBOARD_SUBSCRIPTION_ID }}
       env:
-        PW_FREEZE_TIME: 1
+        PW_CLOCK: ${{ matrix.clock }}
 
   test_electron:
     name: Electron - ${{ matrix.os }}
diff --git a/packages/playwright-core/src/client/browser.ts b/packages/playwright-core/src/client/browser.ts
index b6f55e3b29..7c353656cb 100644
--- a/packages/playwright-core/src/client/browser.ts
+++ b/packages/playwright-core/src/client/browser.ts
@@ -85,11 +85,15 @@ export class Browser extends ChannelOwner<channels.BrowserChannel> implements ap
     const response = forReuse ? await this._channel.newContextForReuse(contextOptions) : await this._channel.newContext(contextOptions);
     const context = BrowserContext.from(response.context);
     await this._browserType._didCreateContext(context, contextOptions, this._options, options.logger || this._logger);
-    if (!forReuse && !!process.env.PW_FREEZE_TIME) {
+    if (!forReuse && process.env.PW_CLOCK === 'frozen') {
       await this._wrapApiCall(async () => {
         await context.clock.install({ time: 0 });
         await context.clock.pauseAt(1000);
       }, true);
+    } else if (!forReuse && process.env.PW_CLOCK === 'realtime') {
+      await this._wrapApiCall(async () => {
+        await context.clock.install({ time: 0 });
+      }, true);
     }
     return context;
   }
diff --git a/packages/playwright-core/src/server/injected/clock.ts b/packages/playwright-core/src/server/injected/clock.ts
index e566597e8d..26342f0223 100644
--- a/packages/playwright-core/src/server/injected/clock.ts
+++ b/packages/playwright-core/src/server/injected/clock.ts
@@ -705,11 +705,12 @@ export function install(globalObject: WindowOrWorkerGlobalScope, config: Install
 }
 
 export function inject(globalObject: WindowOrWorkerGlobalScope) {
+  const builtin = platformOriginals(globalObject).bound;
   const { clock: controller } = install(globalObject);
   controller.resume();
   return {
     controller,
-    builtin: platformOriginals(globalObject).bound,
+    builtin,
   };
 }
 
diff --git a/tests/library/browsercontext-add-cookies.spec.ts b/tests/library/browsercontext-add-cookies.spec.ts
index 311084a837..e0ef92a00d 100644
--- a/tests/library/browsercontext-add-cookies.spec.ts
+++ b/tests/library/browsercontext-add-cookies.spec.ts
@@ -391,7 +391,7 @@ it('should(not) block third party cookies', async ({ context, page, server, brow
 
 it('should not block third party SameSite=None cookies', async ({ contextFactory, httpsServer, browserName }) => {
   it.skip(browserName === 'webkit', 'No third party cookies in WebKit');
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
   const context = await contextFactory({
     ignoreHTTPSErrors: true,
   });
diff --git a/tests/library/chromium/js-coverage.spec.ts b/tests/library/chromium/js-coverage.spec.ts
index f36e6cbcbb..860304d51c 100644
--- a/tests/library/chromium/js-coverage.spec.ts
+++ b/tests/library/chromium/js-coverage.spec.ts
@@ -43,7 +43,7 @@ it('should ignore eval() scripts by default', async function({ page, server }) {
 });
 
 it('shouldn\'t ignore eval() scripts if reportAnonymousScripts is true', async function({ page, server }) {
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(!!process.env.PW_CLOCK);
   await page.coverage.startJSCoverage({ reportAnonymousScripts: true });
   await page.goto(server.PREFIX + '/jscoverage/eval.html');
   const coverage = await page.coverage.stopJSCoverage();
diff --git a/tests/library/headful.spec.ts b/tests/library/headful.spec.ts
index f6e4a28488..cfeb9711c9 100644
--- a/tests/library/headful.spec.ts
+++ b/tests/library/headful.spec.ts
@@ -156,7 +156,7 @@ it('should(not) block third party cookies', async ({ page, server, allowsThirdPa
 
 it('should not block third party SameSite=None cookies', async ({ httpsServer, browserName, browser }) => {
   it.skip(browserName === 'webkit', 'No third party cookies in WebKit');
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
   const page = await browser.newPage({
     ignoreHTTPSErrors: true,
   });
diff --git a/tests/page/page-clock.frozen.spec.ts b/tests/page/page-clock.frozen.spec.ts
index bddb794da1..9b70936377 100644
--- a/tests/page/page-clock.frozen.spec.ts
+++ b/tests/page/page-clock.frozen.spec.ts
@@ -16,9 +16,12 @@
 
 import { test as it, expect } from './pageTest';
 
-it.skip(!process.env.PW_FREEZE_TIME);
-
 it('clock should be frozen', async ({ page }) => {
-  await page.clock.setSystemTime(0);
-  expect(await page.evaluate('Date.now()')).toBe(0);
+  it.skip(process.env.PW_CLOCK !== 'frozen');
+  expect(await page.evaluate('Date.now()')).toBe(1000);
+});
+
+it('clock should be realtime', async ({ page }) => {
+  it.skip(process.env.PW_CLOCK !== 'realtime');
+  expect(await page.evaluate('Date.now()')).toBeLessThan(1000);
 });
diff --git a/tests/page/page-clock.spec.ts b/tests/page/page-clock.spec.ts
index 670891a40a..220f4725fc 100644
--- a/tests/page/page-clock.spec.ts
+++ b/tests/page/page-clock.spec.ts
@@ -16,7 +16,7 @@
 
 import { test, expect } from './pageTest';
 
-test.skip(!!process.env.PW_FREEZE_TIME);
+test.skip(!!process.env.PW_CLOCK);
 
 declare global {
   interface Window {
diff --git a/tests/page/page-evaluate.spec.ts b/tests/page/page-evaluate.spec.ts
index 8414d23b2c..8bc7a57d17 100644
--- a/tests/page/page-evaluate.spec.ts
+++ b/tests/page/page-evaluate.spec.ts
@@ -362,7 +362,7 @@ it('should properly serialize PerformanceMeasure object', async ({ page }) => {
 });
 
 it('should properly serialize window.performance object', async ({ page }) => {
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(!!process.env.PW_CLOCK);
 
   expect(await page.evaluate(() => performance)).toEqual({
     'navigation': {
diff --git a/tests/page/page-goto.spec.ts b/tests/page/page-goto.spec.ts
index 6703d84498..f0a700429d 100644
--- a/tests/page/page-goto.spec.ts
+++ b/tests/page/page-goto.spec.ts
@@ -481,7 +481,7 @@ it('js redirect overrides url bar navigation ', async ({ page, server, browserNa
 
 it('should succeed on url bar navigation when there is pending navigation', async ({ page, server, browserName }) => {
   it.info().annotations.push({ type: 'issue', description: 'https://github.com/microsoft/playwright/issues/21574' });
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
   server.setRoute('/a', (req, res) => {
     res.writeHead(200, { 'content-type': 'text/html' });
     res.end(`
@@ -754,7 +754,7 @@ it('should properly wait for load', async ({ page, server, browserName }) => {
 
 it('should not resolve goto upon window.stop()', async ({ browserName, page, server }) => {
   it.fixme(browserName === 'firefox', 'load/domcontentloaded events are flaky');
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
 
   let response;
   server.setRoute('/module.js', (req, res) => {
@@ -797,7 +797,7 @@ it('should return when navigation is committed if commit is specified', async ({
 });
 
 it('should wait for load when iframe attaches and detaches', async ({ page, server }) => {
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
   server.setRoute('/empty.html', (req, res) => {
     res.writeHead(200, { 'content-type': 'text/html' });
     res.end(`
diff --git a/tests/page/page-history.spec.ts b/tests/page/page-history.spec.ts
index 2bc01512dd..cf6eb2d456 100644
--- a/tests/page/page-history.spec.ts
+++ b/tests/page/page-history.spec.ts
@@ -245,7 +245,7 @@ it('page.goForward during renderer-initiated navigation', async ({ page, server
 
 it('regression test for issue 20791', async ({ page, server }) => {
   it.info().annotations.push({ type: 'issue', description: 'https://github.com/microsoft/playwright/issues/20791' });
-  it.skip(!!process.env.PW_FREEZE_TIME);
+  it.skip(process.env.PW_CLOCK === 'frozen');
   server.setRoute('/iframe.html', (req, res) => {
     res.writeHead(200, { 'content-type': 'text/html; charset=utf-8' });
     // iframe access parent frame to log a value from it.