diff --git a/.github/workflows/tests_v2.yml b/.github/workflows/tests_v2.yml
index 56096967..0391c22c 100644
--- a/.github/workflows/tests_v2.yml
+++ b/.github/workflows/tests_v2.yml
@@ -53,7 +53,7 @@ jobs:
       - name: Run tests_v2
         run: |
           KRKN_TEST_COVERAGE=1 python -m pytest CI/tests_v2/ -v --timeout=300 --reruns=1 --reruns-delay=5 \
-            --html=CI/tests_v2/report.html -n auto --junitxml=CI/tests_v2/results.xml
+            --html=CI/tests_v2/report.html -n auto --dist loadgroup --junitxml=CI/tests_v2/results.xml
 
       - name: Upload tests_v2 artifacts
         if: always()
diff --git a/CI/tests_v2/Makefile b/CI/tests_v2/Makefile
index 5b4aae22..92e582d6 100644
--- a/CI/tests_v2/Makefile
+++ b/CI/tests_v2/Makefile
@@ -75,10 +75,10 @@ preflight:
 
 test: preflight
 	cd $(REPO_ROOT) && KRKN_TEST_COVERAGE=1 $(PYTHON) -m pytest $(TESTS_DIR)/ -v --timeout=300 --reruns=2 --reruns-delay=10 \
-		--html=$(TESTS_DIR)/report.html -n auto --junitxml=$(TESTS_DIR)/results.xml
+		--html=$(TESTS_DIR)/report.html -n auto --dist loadgroup --junitxml=$(TESTS_DIR)/results.xml
 
 test-fast: preflight
-	cd $(REPO_ROOT) && $(PYTHON) -m pytest $(TESTS_DIR)/ -v -p no:rerunfailures -n auto --timeout=120
+	cd $(REPO_ROOT) && $(PYTHON) -m pytest $(TESTS_DIR)/ -v -p no:rerunfailures -n auto --dist loadgroup --timeout=120
 
 test-debug: preflight
 	cd $(REPO_ROOT) && $(PYTHON) -m pytest $(TESTS_DIR)/ -v -s -p no:rerunfailures --timeout=300 \
diff --git a/CI/tests_v2/README.md b/CI/tests_v2/README.md
index 997d5b8a..a2d4d7df 100644
--- a/CI/tests_v2/README.md
+++ b/CI/tests_v2/README.md
@@ -89,7 +89,7 @@ pytest CI/tests_v2/ -v --timeout=300 --reruns=2 --reruns-delay=10 --html=CI/test
 ### Run in parallel (faster suite)
 
 ```bash
-pytest CI/tests_v2/ -v -n 4 --timeout=300
+pytest CI/tests_v2/ -v -n 4 --dist loadgroup --timeout=300
 ```
 
 Ephemeral namespaces make tests parallel-safe; use `-n` with the number of workers (e.g. 4).
diff --git a/CI/tests_v2/pytest.ini b/CI/tests_v2/pytest.ini
index 0a1cbdd2..f4b797fa 100644
--- a/CI/tests_v2/pytest.ini
+++ b/CI/tests_v2/pytest.ini
@@ -19,4 +19,5 @@ markers =
     namespace_deletion: marks a test as a namespace deletion (service_disruption) scenario test
     no_workload: skip workload deployment for this test (e.g. negative tests)
     order: set test order (pytest-order)
+    xdist_group: assign tests to a named xdist group so they run on the same worker (no parallel tc conflicts)
 junit_family = xunit2
diff --git a/CI/tests_v2/scenarios/node_network_chaos/test_node_network_chaos.py b/CI/tests_v2/scenarios/node_network_chaos/test_node_network_chaos.py
index 3e00cc56..734b151c 100644
--- a/CI/tests_v2/scenarios/node_network_chaos/test_node_network_chaos.py
+++ b/CI/tests_v2/scenarios/node_network_chaos/test_node_network_chaos.py
@@ -40,6 +40,7 @@ TEST_DURATION = 30
 
 @pytest.mark.functional
 @pytest.mark.node_network_chaos
+@pytest.mark.xdist_group("node_network_chaos")
 class TestNodeNetworkChaos(BaseScenarioTest):
     """Node network chaos: packet loss, latency, bandwidth, direction, targeting, safety, cleanup."""