diff --git a/.github/workflows/rails-ci.yml b/.github/workflows/rails-ci.yml
index fb40b88..1cb3792 100644
--- a/.github/workflows/rails-ci.yml
+++ b/.github/workflows/rails-ci.yml
@@ -186,7 +186,7 @@ jobs:
         background: true
 
       # No dependencies of its own, so it can fire immediately too.
-      - name: Load Previous Turbo-Test Runtime Stats
+      - name: Load Previous Spec Runtime Stats
         uses: actions/cache/restore@v6
         with:
           path: tmp/turbo_rspec_runtime.log
@@ -278,7 +278,7 @@ jobs:
         background: true
 
       - name: Run Rspec Tests
-        run: bundle exec parallel_rspec --verbose spec/
+        run: bundle exec parallel_rspec --verbose --runtime-log tmp/turbo_rspec_runtime.log spec/
         env:
           CAPYBARA_DRIVER: js
 
@@ -287,7 +287,7 @@ jobs:
       # None of these read each other's output — all four only consume
       # artifacts already produced by Run Rspec Tests above.
       - parallel:
-          - name: Save Turbo-Test Runtime Stats
+          - name: Save Spec Runtime Stats
             if: always()
             uses: actions/cache/save@v6
             with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c730ecc..76b8299 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # RoleModel/actions
 
+## [v3.11.3] Aug 31, 2026
+
+- Pass `--runtime-log tmp/turbo_rspec_runtime.log` to `parallel_rspec` in `rails-ci.yml` and both composite actions. They cached the runtime log at that path, but `parallel_rspec` reads `tmp/parallel_runtime_rspec.log`, so it found nothing and silently grouped specs by file size — leaving ~30% of a 16-process runner idle. Also renames the two cache steps to "Load/Save Spec Runtime Stats". (#33)
+
 ## [v3.11.2] Aug 20, 2026
 
 - Bump outdated `actions/checkout` and `actions/setup-node` references, including `setup-node` in `rails-ci.yml`. (#30)
diff --git a/linting-and-non-system-tests/action.yml b/linting-and-non-system-tests/action.yml
index be02c56..63c7908 100644
--- a/linting-and-non-system-tests/action.yml
+++ b/linting-and-non-system-tests/action.yml
@@ -66,7 +66,7 @@ runs:
 
     - name: Run Rspec Tests
       shell: bash
-      run: bundle exec parallel_rspec --verbose --exclude-pattern "/system/"
+      run: bundle exec parallel_rspec --verbose --runtime-log tmp/turbo_rspec_runtime.log --exclude-pattern "/system/"
 
     - name: Publish Test Results
       uses: mikepenz/action-junit-report@v6
diff --git a/system-tests/action.yml b/system-tests/action.yml
index d9bf28b..b6537c8 100644
--- a/system-tests/action.yml
+++ b/system-tests/action.yml
@@ -75,7 +75,7 @@ runs:
 
     - name: Run Rspec Tests
       shell: bash
-      run: bundle exec parallel_rspec --verbose-command spec/system
+      run: bundle exec parallel_rspec --verbose-command --runtime-log tmp/turbo_rspec_runtime.log spec/system
       env:
         GOOGLE_CHROME_BIN: ${{ case(inputs.web-driver == 'selenium', steps.setup-chrome.outputs.chrome-path, '') }}
         CAPYBARA_DRIVER: js