diff --git a/.github/workflows/win-build.yml b/.github/workflows/win-build.yml
index 27dcd408170..80c0a8e8110 100644
--- a/.github/workflows/win-build.yml
+++ b/.github/workflows/win-build.yml
@@ -92,11 +92,15 @@ jobs:
           CFGOPT: --enable-64bit ${{ matrix.config }}
         timeout-minutes: 5
       - name: Build
-        run: make all
+        run: make -j4 all
         timeout-minutes: 5
       - name: Build Test Harness
-        run: make tcltest
+        run: make -j4 tcltest
         timeout-minutes: 5
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          echo 'puts exe:\t[info nameofexecutable]\nver:\t[info patchlevel]\t[if {![catch tcl::build-info ret]} {set ret}]\nlib:\t[info library]\nplat:\t[lsort -dictionary -stride 2 [array get tcl_platform]]' | make runtest || echo 'get info failed'
       - name: Run Tests
         run: make test
         timeout-minutes: 30