diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index 488055c..0edb9e9 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -33,14 +33,11 @@ jobs:
           - '1'
         os:
           - ubuntu-latest
-          - macos-latest
-          - windows-latest
     steps:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
-          arch: x64
       - uses: julia-actions/cache@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/test/runtests.jl b/test/runtests.jl
index 5ba2748..5175e90 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -142,7 +142,7 @@ end
 @testset "GridSample" begin
     lb = [0.0, 0.0]
     ub = [1.0, 1.0]
-    n = 16
+    n = 64
     d = 4
 
     s = QuasiMonteCarlo.sample(n, lb, ub, GridSample())