diff --git a/.github/workflows/actions-ci.yml b/.github/workflows/actions-ci.yml
index bdffa365eeb..250c8555e22 100644
--- a/.github/workflows/actions-ci.yml
+++ b/.github/workflows/actions-ci.yml
@@ -131,13 +131,20 @@ jobs:
 
   OpenBSD-64-bit:
     needs: [sanity-test-run]
-    runs-on: macos-12
+    runs-on: macos-12-large
+    strategy:
+      matrix:
+        runner: ["tests/ci/run_posix_tests.sh", "tests/ci/run_fips_tests.sh"]
     steps:
       - uses: actions/checkout@v3
       - name: OpenBSD
-        uses: cross-platform-actions/action@v0.10.0
+        uses: cross-platform-actions/action@v0.22.0
+        env:
+          AWS_LC_SSL_TEST_RUNNER_PEEK_ROUNDS: 5
         with:
+          environment_variables: AWS_LC_SSL_TEST_RUNNER_PEEK_ROUNDS
           operating_system: openbsd
+          cpu_count: 12
           architecture: x86-64
           version: '7.4'
           shell: bash
@@ -146,7 +153,7 @@ jobs:
             mkdir "${HOME}/bin"
             ln -s /usr/local/bin/gmake "${HOME}/bin/make"
             export PATH="${HOME}/bin:${PATH}"
-
+            ${{ matrix.runner }}
 
     # TODO: Investigate sudden hanging tests and failures in GHA runners (P114059413)
 #  MSVC-SDE-32-bit: