diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e48cb0749..240afe8f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -103,8 +103,12 @@ jobs:
           python-version: '3.12'
           browser: chromium
     runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+    - uses: microsoft/playwright/.github/actions/ci-env@main
     - name: Set up Python
       uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
@@ -127,34 +131,17 @@ jobs:
       id: install
       run: python -m playwright install --with-deps ${{ matrix.browser }}
     - name: Common Tests
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/common --browser=${{ matrix.browser }}
+      run: $CI_ENV_EXEC pytest tests/common --browser=${{ matrix.browser }}
     - name: Test Reference count
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/test_reference_count_async.py --browser=${{ matrix.browser }}
+      run: $CI_ENV_EXEC pytest tests/test_reference_count_async.py --browser=${{ matrix.browser }}
     - name: Test Wheel Installation
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/test_installation.py --browser=${{ matrix.browser }}
-    - name: Test Sync API
-      if: runner.os != 'Linux'
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/sync --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
+      run: $CI_ENV_EXEC pytest tests/test_installation.py --browser=${{ matrix.browser }}
     - name: Test Sync API
-      if: runner.os == 'Linux'
-      run: xvfb-run --auto-servernum --server-args="-screen 0 1280x960x24" pytest tests/sync --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
+      run: $CI_ENV_EXEC pytest tests/sync --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
     - name: Test Async API
       # Also after a failed sync step: the two suites report on their own.
-      if: ${{ !cancelled() && steps.install.outcome == 'success' && runner.os != 'Linux' }}
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/async --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
-    - name: Test Async API
-      if: ${{ !cancelled() && steps.install.outcome == 'success' && runner.os == 'Linux' }}
-      run: xvfb-run --auto-servernum --server-args="-screen 0 1280x960x24" pytest tests/async --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
+      if: ${{ !cancelled() && steps.install.outcome == 'success' }}
+      run: $CI_ENV_EXEC pytest tests/async --browser=${{ matrix.browser }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
 
   test-stable:
     name: Stable
@@ -173,8 +160,12 @@ jobs:
         - os: playwright-x64-server2025-64-core
           browser-channel: msedge
     runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+    - uses: microsoft/playwright/.github/actions/ci-env@main
     - name: Set up Python
       uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
@@ -197,26 +188,13 @@ jobs:
       id: install
       run: python -m playwright install ${{ matrix.browser-channel }} --with-deps
     - name: Common Tests
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/common --browser=chromium --browser-channel=${{ matrix.browser-channel }}
+      run: $CI_ENV_EXEC pytest tests/common --browser=chromium --browser-channel=${{ matrix.browser-channel }}
     - name: Test Sync API
-      if: runner.os != 'Linux'
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/sync --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
-    - name: Test Sync API
-      if: runner.os == 'Linux'
-      run: xvfb-run --auto-servernum --server-args="-screen 0 1280x960x24" pytest tests/sync --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
+      run: $CI_ENV_EXEC pytest tests/sync --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
     - name: Test Async API
       # Also after a failed sync step: the two suites report on their own.
-      if: ${{ !cancelled() && steps.install.outcome == 'success' && runner.os != 'Linux' }}
-      run: |
-        ${{ runner.os == 'Windows' && '. ./scripts/windows-normal-io.ps1' || '' }}
-        pytest tests/async --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
-    - name: Test Async API
-      if: ${{ !cancelled() && steps.install.outcome == 'success' && runner.os == 'Linux' }}
-      run: xvfb-run --auto-servernum --server-args="-screen 0 1280x960x24" pytest tests/async --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
+      if: ${{ !cancelled() && steps.install.outcome == 'success' }}
+      run: $CI_ENV_EXEC pytest tests/async --browser=chromium --browser-channel=${{ matrix.browser-channel }} -n ${{ env.WORKERS }} -p pytest_dot_reporter -rfE --color=yes
 
   test_examples:
     name: Examples
diff --git a/scripts/windows-normal-io.ps1 b/scripts/windows-normal-io.ps1
deleted file mode 100644
index f1308b638..000000000
--- a/scripts/windows-normal-io.ps1
+++ /dev/null
@@ -1,44 +0,0 @@
-# Dot-source at the start of a Windows test step: the self-hosted runner starts steps at
-# I/O priority Low, which the driver and the browsers inherit, and Firefox storage flushes
-# then stall until tests time out. See https://github.com/microsoft/playwright/issues/43704.
-
-$ErrorActionPreference = 'Stop'
-
-Add-Type -TypeDefinition @'
-using System;
-using System.Runtime.InteropServices;
-
-public static class TestProcessIOPriority {
-    [DllImport("ntdll.dll")]
-    public static extern int NtSetInformationProcess(
-        IntPtr process, int informationClass, ref int information, int size);
-
-    [DllImport("ntdll.dll")]
-    public static extern int NtQueryInformationProcess(
-        IntPtr process, int informationClass, out int information, int size, out int length);
-}
-'@
-
-$priority = 0
-$length = 0
-$status = [TestProcessIOPriority]::NtQueryInformationProcess(
-    [IntPtr](-1), 33, [ref]$priority, 4, [ref]$length)
-if ($status -ne 0) {
-    throw ('Reading I/O priority failed: NTSTATUS 0x{0:X8}' -f $status)
-}
-$inheritedPriority = $priority
-$priority = 2
-$status = [TestProcessIOPriority]::NtSetInformationProcess(
-    [IntPtr](-1), 33, [ref]$priority, 4)
-if ($status -ne 0) {
-    throw ('Setting normal I/O priority failed: NTSTATUS 0x{0:X8}' -f $status)
-}
-$status = [TestProcessIOPriority]::NtQueryInformationProcess(
-    [IntPtr](-1), 33, [ref]$priority, 4, [ref]$length)
-if ($status -ne 0) {
-    throw ('Reading I/O priority failed: NTSTATUS 0x{0:X8}' -f $status)
-}
-if ($priority -ne 2) {
-    throw "Expected normal I/O priority (2), got $priority"
-}
-Write-Host "Test launcher I/O priority: $inheritedPriority -> $priority (Normal)"