diff --git a/.github/actions/test-sde/action.yml b/.github/actions/test-sde/action.yml
index 6ae9bb483..7624728ec 100644
--- a/.github/actions/test-sde/action.yml
+++ b/.github/actions/test-sde/action.yml
@@ -16,5 +16,5 @@ runs:
     - run: |
         WORK_DIR=`pwd`
         cd ../../builds/Ray/tests
-        sde ${{ inputs.sde-args }} -- $WORK_DIR/${{ inputs.bin-dir }}/test_Ray -j4 ${{ inputs.test-args }}
+        sde ${{ inputs.sde-args }} -- $WORK_DIR/${{ inputs.bin-dir }}/test_Ray ${{ inputs.test-args }}
       shell: bash
diff --git a/.github/actions/test/action.yml b/.github/actions/test/action.yml
index 2e915d933..446ac2b3c 100644
--- a/.github/actions/test/action.yml
+++ b/.github/actions/test/action.yml
@@ -19,5 +19,5 @@ runs:
         chmod +x ./${{ inputs.bin-dir }}/${{ inputs.bin-name }}
         WORK_DIR=`pwd`
         cd ../../builds/Ray/tests
-        $WORK_DIR/${{ inputs.bin-dir }}/${{ inputs.bin-name }} -j4 ${{ inputs.test-args }}
+        $WORK_DIR/${{ inputs.bin-dir }}/${{ inputs.bin-name }} ${{ inputs.test-args }}
       shell: bash
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 193c40b32..491c388a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -99,7 +99,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-x86_64-gpu-nv:
     runs-on: [ windows, x86_64, nv ]
     needs:
@@ -131,7 +131,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--device AMD --nocpu"
+          test-args: "--device AMD --nocpu -vl 1"
   test-windows-x86_64-gpu-arc:
     runs-on: [ windows, x86_64, arc ]
     needs:
@@ -147,7 +147,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--device Arc --nocpu"
+          test-args: "--device Arc --nocpu -vl 1"
   test-windows-x86_64-gpu-xe:
     runs-on: [ windows, x86_64, xe ]
     needs:
@@ -163,7 +163,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--device Xe --nocpu"
+          test-args: "--device Xe --nocpu -vl 1"
   test-windows-arm64-cpu:
     runs-on: [ windows, arm64 ]
     needs:
@@ -179,7 +179,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-arm64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-arm64-gpu-adreno:
     runs-on: [ windows, arm64, adreno ]
     needs:
@@ -195,7 +195,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-arm64"
-          test-args: "--device Adreno --nocpu"
+          test-args: "--device Adreno --nocpu -vl 1"
   test-linux-x86_64-cpu:
     runs-on: [ linux, x86_64 ]
     needs:
@@ -211,7 +211,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "linux-x86_64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-linux-x86_64-gpu-amd:
     runs-on: [ linux, x86_64, amd ]
     needs:
@@ -227,7 +227,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "linux-x86_64"
-          test-args: "--device AMD --nocpu --nohwrt"
+          test-args: "--device AMD --nocpu --nohwrt -vl 1"
   test-linux-x86_64-gpu-nv:
     runs-on: [ linux, x86_64, nv ]
     needs:
@@ -243,7 +243,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "linux-x86_64"
-          test-args: "--device NV --nocpu"
+          test-args: "--device NV --nocpu -vl 1"
   test-macos-arm64-cpu:
     runs-on: [ macos, arm64 ]
     needs:
@@ -259,7 +259,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "macos-universal"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-macos-arm64-gpu-m1:
     runs-on: [ macos, arm64, m1 ]
     needs:
@@ -275,7 +275,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "macos-universal"
-          test-args: "--device M1 --nocpu"
+          test-args: "--device M1 --nocpu -vl 1"
   test-macos-x86_64-cpu:
     runs-on: [ macos, x86_64 ]
     needs:
@@ -291,4 +291,4 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "macos-universal"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
diff --git a/.github/workflows/schedule.yml b/.github/workflows/schedule.yml
index de6d40030..8f9b9bbe3 100644
--- a/.github/workflows/schedule.yml
+++ b/.github/workflows/schedule.yml
@@ -294,7 +294,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-x86_64-gpu-nv:
     runs-on: [ windows, x86_64, nv ]
     needs:
@@ -374,7 +374,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-arm64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-arm64-gpu-adreno:
     runs-on: [ windows, arm64, adreno ]
     needs:
@@ -406,7 +406,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "linux-x86_64"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-linux-x86_64-gpu-amd:
     runs-on: [ linux, x86_64, amd ]
     needs:
@@ -454,7 +454,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "macos-universal"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-macos-arm64-gpu-m1:
     runs-on: [ macos, arm64, m1 ]
     needs:
@@ -486,7 +486,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "macos-universal"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-x86_64-cpu-sse2:
     runs-on: [ windows, x86_64, win10 ]
     needs:
@@ -502,7 +502,7 @@ jobs:
         uses: ./.github/actions/test-sde
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--arch SSE2 --nogpu"
+          test-args: "--arch SSE2 --nogpu -j4"
           sde-args: "-p4p"
   test-windows-x86_64-cpu-sse41:
     runs-on: [ windows, x86_64, win10 ]
@@ -519,7 +519,7 @@ jobs:
         uses: ./.github/actions/test-sde
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--arch SSE41 --nogpu"
+          test-args: "--arch SSE41 --nogpu -j4"
           sde-args: "-pnr"
   test-windows-x86_64-cpu-avx:
     runs-on: [ windows, x86_64 ]
@@ -536,7 +536,7 @@ jobs:
         uses: ./.github/actions/test-sde
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--arch AVX --nogpu"
+          test-args: "--arch AVX --nogpu -j4"
           sde-args: "-snb"
   test-windows-x86_64-cpu-avx2:
     runs-on: [ windows, x86_64 ]
@@ -553,7 +553,7 @@ jobs:
         uses: ./.github/actions/test-sde
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--arch AVX2 --nogpu"
+          test-args: "--arch AVX2 --nogpu -j4"
           sde-args: "-hsw"
   test-windows-x86_64-cpu-avx512:
     runs-on: [ windows, x86_64 ]
@@ -570,7 +570,7 @@ jobs:
         uses: ./.github/actions/test-sde
         with:
           bin-dir: "windows-x86_64"
-          test-args: "--arch AVX512 --nogpu"
+          test-args: "--arch AVX512 --nogpu -j4"
           sde-args: "-future"
   test-linux-x86_64-cpu-tsan:
     runs-on: [ linux, x86_64 ]
@@ -588,7 +588,7 @@ jobs:
         with:
           bin-name: "test_Ray-tsan"
           bin-dir: "linux-x86_64-tsan"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-x86_64-cpu-asan:
     runs-on: [ windows, x86_64 ]
     needs:
@@ -605,7 +605,7 @@ jobs:
         with:
           bin-name: "test_Ray-asan"
           bin-dir: "windows-x86_64-asan"
-          test-args: "--nogpu"
+          test-args: "--nogpu -j4"
   test-windows-x86_64-gpu-nv-asan:
     runs-on: [ windows, x86_64, nv ]
     needs:
@@ -638,7 +638,7 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-arm64"
-          test-args: "--nogpu --time_limit 2.95"
+          test-args: "--nogpu -j4 --time_limit 2.95"
   test-windows-arm64-gpu-perf:
     runs-on: [ windows, arm64, perf, adreno ]
     needs:
@@ -654,4 +654,4 @@ jobs:
         uses: ./.github/actions/test
         with:
           bin-dir: "windows-arm64"
-          test-args: "--nocpu --time_limit 5.4"
+          test-args: "--nocpu -j4 --time_limit 5.4"
diff --git a/tests/main.cpp b/tests/main.cpp
index 9f23bfe3f..d47265c66 100644
--- a/tests/main.cpp
+++ b/tests/main.cpp
@@ -186,9 +186,7 @@ int main(int argc, char *argv[]) {
         threads_count = 1;
     }
 
-    if (threads_count > 1) {
-        g_minimal_output = true;
-    }
+    g_minimal_output = true;
 
 #if defined(_WIN32) && !defined(__clang__)
     const bool enable_fp_exceptions = !nocpu || full_tests;