diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 9ba065af4945d5..98c1a51d4d6678 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -80,6 +80,21 @@ jobs:
         run: |
           yarn nx format:check --base origin/master
 
+      - name: v0,v8 jest test perf experiments worker 50%
+        run: |
+          yarn nx run-many -t build -p react,react-northstar
+
+          yarn nx run react:test
+          yarn nx run react-northstar:test
+
+      - name: v0,v8 jest test perf experiments worker 1
+        run: |
+          yarn nx reset
+          yarn nx run-many -t build -p react,react-northstar
+
+          FLUENT_WORKER=1 yarn nx run react:test
+          FLUENT_WORKER=1 yarn nx run react-northstar:test
+
       - name: build, test, lint, test-ssr (affected)
         run: |
           yarn nx affected -t build test lint type-check test-ssr test-integration verify-packaging --nxBail
diff --git a/scripts/jest/src/shared.js b/scripts/jest/src/shared.js
index fc5c5cc4a94230..98ee9b4ff8a0b9 100644
--- a/scripts/jest/src/shared.js
+++ b/scripts/jest/src/shared.js
@@ -8,6 +8,8 @@
  *
  * based on testing spawning only 50% of available workers is fastest on both Local Machine and CI env atm ( 8 Core machine, 16GB RAM)
  */
-const workersConfig = { maxWorkers: '50%' };
+
+const workersConfig = { maxWorkers: process.env.FLUENT_WORKER || '50%' };
+console.log({ workerEnv: process.env.FLUENT_WORKER, workersConfig });
 
 exports.workersConfig = workersConfig;