diff --git a/.github/workflows/studio-windows-inference-smoke.yml b/.github/workflows/studio-windows-inference-smoke.yml
index 096ec95d03..188cdf5a19 100644
--- a/.github/workflows/studio-windows-inference-smoke.yml
+++ b/.github/workflows/studio-windows-inference-smoke.yml
@@ -345,15 +345,13 @@ jobs:
 
       - name: Stop Studio
         if: always()
-        # `set +e` + redirect everything: Git Bash on windows-latest
-        # has been observed to exit 143 from the kill/sleep block even
-        # when the upstream test work passed, masking a green run. The
-        # teardown does not gate correctness, so absorb any signal.
-        run: |
-          set +e
-          kill "${STUDIO_PID}" >/dev/null 2>&1 || true
-          sleep 2 >/dev/null 2>&1 || true
-          exit 0
+        # Run as cmd so we are not running through the Git Bash shell;
+        # Git Bash on windows-latest has been observed to exit 143
+        # (SIGTERM) from any inline kill/sleep block, masking a green
+        # test run. The runner reclaims the Studio child process at
+        # job end either way, so just emit a marker and exit 0.
+        shell: cmd
+        run: echo Stop Studio (no-op; runner reclaims STUDIO_PID=%STUDIO_PID% at job end)
 
       - name: Upload logs
         if: always()
@@ -768,15 +766,13 @@ jobs:
 
       - name: Stop Studio
         if: always()
-        # `set +e` + redirect everything: Git Bash on windows-latest
-        # has been observed to exit 143 from the kill/sleep block even
-        # when the upstream test work passed, masking a green run. The
-        # teardown does not gate correctness, so absorb any signal.
-        run: |
-          set +e
-          kill "${STUDIO_PID}" >/dev/null 2>&1 || true
-          sleep 2 >/dev/null 2>&1 || true
-          exit 0
+        # Run as cmd so we are not running through the Git Bash shell;
+        # Git Bash on windows-latest has been observed to exit 143
+        # (SIGTERM) from any inline kill/sleep block, masking a green
+        # test run. The runner reclaims the Studio child process at
+        # job end either way, so just emit a marker and exit 0.
+        shell: cmd
+        run: echo Stop Studio (no-op; runner reclaims STUDIO_PID=%STUDIO_PID% at job end)
 
       - name: Upload logs
         if: always()
@@ -1162,15 +1158,13 @@ jobs:
 
       - name: Stop Studio
         if: always()
-        # `set +e` + redirect everything: Git Bash on windows-latest
-        # has been observed to exit 143 from the kill/sleep block even
-        # when the upstream test work passed, masking a green run. The
-        # teardown does not gate correctness, so absorb any signal.
-        run: |
-          set +e
-          kill "${STUDIO_PID}" >/dev/null 2>&1 || true
-          sleep 2 >/dev/null 2>&1 || true
-          exit 0
+        # Run as cmd so we are not running through the Git Bash shell;
+        # Git Bash on windows-latest has been observed to exit 143
+        # (SIGTERM) from any inline kill/sleep block, masking a green
+        # test run. The runner reclaims the Studio child process at
+        # job end either way, so just emit a marker and exit 0.
+        shell: cmd
+        run: echo Stop Studio (no-op; runner reclaims STUDIO_PID=%STUDIO_PID% at job end)
 
       - name: Upload logs
         if: always()
diff --git a/tests/studio/install/test_llama_pr_force_and_source.py b/tests/studio/install/test_llama_pr_force_and_source.py
index 114680f458..2d7c038861 100644
--- a/tests/studio/install/test_llama_pr_force_and_source.py
+++ b/tests/studio/install/test_llama_pr_force_and_source.py
@@ -35,9 +35,11 @@ requires_pwsh = pytest.mark.skipif(not PWSH_AVAILABLE, reason = "pwsh not availa
 # Helpers
 # ---------------------------------------------------------------------------
 def run_bash(
-    script: str, *, timeout: int = 10, env: dict | None = None
+    script: str, *, timeout: int = 60, env: dict | None = None
 ) -> subprocess.CompletedProcess:
-    """Run a bash script fragment and return the CompletedProcess."""
+    """Run a bash script fragment and return the CompletedProcess.
+    60s default tolerates slow shell startup on heavily-loaded CI
+    runners; the scripts themselves run in well under a second."""
     run_env = os.environ.copy()
     if env:
         run_env.update(env)
@@ -51,9 +53,12 @@ def run_bash(
 
 
 def run_pwsh(
-    script: str, *, timeout: int = 10, env: dict | None = None
+    script: str, *, timeout: int = 60, env: dict | None = None
 ) -> subprocess.CompletedProcess:
-    """Run a PowerShell script fragment and return the CompletedProcess."""
+    """Run a PowerShell script fragment and return the CompletedProcess.
+    60s default tolerates slow pwsh startup on heavily-loaded CI
+    runners; the scripts themselves run in well under a second.
+    A 10s budget previously surfaced as a flaky TimeoutExpired."""
     run_env = os.environ.copy()
     run_env["NO_COLOR"] = "1"
     if env: