diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 083041bff..7d91fbe2b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,27 +6,9 @@ on:
       - main
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v4
-        with:
-          node-version: '20.x'
-          cache: "npm"
-          cache-dependency-path: package-lock.json
-      - run: npm config set fund false && npm set audit false
-      - run: npm ci
-      # Test that the packaging works as well
-      - run: npm pack --workspaces
-      - run: npm run lint
   test:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest-x64]
-    name: test - ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
+    name: test - windows-self-hosted-arm64
+    runs-on: [self-hosted, Windows, ARM64, checkly-cli]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v4
@@ -44,34 +26,7 @@ jobs:
       - name: Save LLM rules as an artifact
         uses: actions/upload-artifact@v4
         with:
-          name: llm-rules-test-${{ matrix.os }}
+          name: llm-rules-test-windows-self-hosted-arm64
           if-no-files-found: error
           path: packages/cli/dist/ai-context/*
           retention-days: 1
-  test-e2e:
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest-x64]
-    name: test-e2e - ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v4
-        with:
-          node-version: '20.x'
-          cache: "npm"
-          cache-dependency-path: package-lock.json
-      - uses: pnpm/action-setup@v5
-        with:
-          version: 10
-      - run: npm config set fund false && npm set audit false
-      - run: npm ci
-      - run: npm run prepack
-      - run: npm run test:e2e
-        env:
-          CHECKLY_ACCOUNT_NAME: ${{ secrets.E2E_CHECKLY_ACCOUNT_NAME }}
-          CHECKLY_ACCOUNT_ID: ${{ secrets.E2E_CHECKLY_ACCOUNT_ID }}
-          CHECKLY_API_KEY: ${{ secrets.E2E_CHECKLY_API_KEY }}
-          CHECKLY_EMPTY_ACCOUNT_ID: ${{ secrets.E2E_EMPTY_CHECKLY_ACCOUNT_ID }}
-          CHECKLY_EMPTY_API_KEY: ${{ secrets.E2E_EMPTY_CHECKLY_API_KEY }}
diff --git a/packages/cli/src/testing/fixture-sandbox.ts b/packages/cli/src/testing/fixture-sandbox.ts
index 6c4a0d812..277776fef 100644
--- a/packages/cli/src/testing/fixture-sandbox.ts
+++ b/packages/cli/src/testing/fixture-sandbox.ts
@@ -82,10 +82,16 @@ export class FixtureSandbox {
 
     const root = maybeRoot
       ? await fs.mkdir(maybeRoot, { recursive: true }).then(() => maybeRoot)
-      // tmpdir() on macOS usually returns a path starting with /var which is
-      // a symlink. Resolve the path so that we don't run into path mismatch
-      // issues.
-      : await fs.realpath(await fs.mkdtemp(path.join(tmpdir(), 'fixture-sandbox-')))
+      : process.platform === 'win32'
+        // fs.realpath uses GetFinalPathNameByHandle on Windows, which fails
+        // with EISDIR on virtual filesystems that don't register with the
+        // Mount Manager (e.g. ImDisk RAM disks). tmpdir() on Windows is
+        // never a symlink, so skipping realpath is safe.
+        ? await fs.mkdtemp(path.join(tmpdir(), 'fixture-sandbox-'))
+        // tmpdir() on macOS usually returns a path starting with /var which is
+        // a symlink. Resolve the path so that we don't run into path mismatch
+        // issues.
+        : await fs.realpath(await fs.mkdtemp(path.join(tmpdir(), 'fixture-sandbox-')))
 
     debug(`Using root ${root}`)