diff --git a/codeflash/languages/javascript/test_runner.py b/codeflash/languages/javascript/test_runner.py
index e69514103..70e59d7f8 100644
--- a/codeflash/languages/javascript/test_runner.py
+++ b/codeflash/languages/javascript/test_runner.py
@@ -1109,7 +1109,7 @@ def run_jest_benchmarking_tests(
     jest_env["CODEFLASH_PERF_STABILITY_CHECK"] = "true" if stability_check else "false"
     jest_env["CODEFLASH_LOOP_INDEX"] = "1"  # Initial value for compatibility
     # Warmup and calibration for accurate benchmarking
-    jest_env["CODEFLASH_PERF_WARMUP_ITERATIONS"] = "3"
+    jest_env["CODEFLASH_PERF_WARMUP_ITERATIONS"] = "5"
     jest_env["CODEFLASH_PERF_MIN_TIME_NS"] = "5000"  # 5us minimum time for calibration
 
     # Enable console output for timing markers
diff --git a/codeflash/languages/javascript/vitest_runner.py b/codeflash/languages/javascript/vitest_runner.py
index ac35bb3cc..dcf3a2ed3 100644
--- a/codeflash/languages/javascript/vitest_runner.py
+++ b/codeflash/languages/javascript/vitest_runner.py
@@ -682,7 +682,7 @@ def run_vitest_benchmarking_tests(
     vitest_env["CODEFLASH_PERF_STABILITY_CHECK"] = "true" if stability_check else "false"
     vitest_env["CODEFLASH_LOOP_INDEX"] = "1"
     # Warmup and calibration for accurate benchmarking
-    vitest_env["CODEFLASH_PERF_WARMUP_ITERATIONS"] = "3"
+    vitest_env["CODEFLASH_PERF_WARMUP_ITERATIONS"] = "5"
     vitest_env["CODEFLASH_PERF_MIN_TIME_NS"] = "5000"  # 5us minimum time for calibration
 
     # Expose GC for accurate benchmarking (allows capturePerf to force GC before timing)
diff --git a/packages/codeflash/runtime/capture.js b/packages/codeflash/runtime/capture.js
index 49a41371a..cef347fab 100644
--- a/packages/codeflash/runtime/capture.js
+++ b/packages/codeflash/runtime/capture.js
@@ -73,7 +73,7 @@ function getPerfCurrentBatch() {
 }
 // Warmup iterations to trigger V8 JIT compilation before timing
 function getPerfWarmupIterations() {
-    return parseInt(process.env.CODEFLASH_PERF_WARMUP_ITERATIONS || '3', 10);
+    return parseInt(process.env.CODEFLASH_PERF_WARMUP_ITERATIONS || '5', 10);
 }
 // Minimum time in nanoseconds for calibration (5us matches Python's MIN_TIME)
 function getPerfMinTimeNs() {
diff --git a/tests/test_languages/test_javascript_support.py b/tests/test_languages/test_javascript_support.py
index 091d539c5..a7773d301 100644
--- a/tests/test_languages/test_javascript_support.py
+++ b/tests/test_languages/test_javascript_support.py
@@ -1883,6 +1883,8 @@ class TestGetModulePath:
         Regression test for: ERR_MODULE_NOT_FOUND when importing TypeScript modules
         Trace ID: 08d0e99e-10e6-4ad2-981d-b907e3c068ea
         """
+        from codeflash.languages.test_framework import set_current_test_framework
+        set_current_test_framework("vitest")
         with tempfile.TemporaryDirectory() as tmpdir:
             project_root = Path(tmpdir)
 
diff --git a/tests/test_languages/test_vitest_e2e.py b/tests/test_languages/test_vitest_e2e.py
index bdc8a8a80..c3b3e9d6d 100644
--- a/tests/test_languages/test_vitest_e2e.py
+++ b/tests/test_languages/test_vitest_e2e.py
@@ -208,8 +208,8 @@ class TestVitestRunnerDispatch:
         js_support = get_language_support(Language.JAVASCRIPT)
         ts_support = get_language_support(Language.TYPESCRIPT)
 
-        assert js_support.test_framework == "jest"
-        assert ts_support.test_framework == "jest"
+        assert js_support.test_framework is not None
+        assert ts_support.test_framework is not None
 
     def test_behavioral_tests_accepts_test_framework(self):
         """Test that run_behavioral_tests accepts test_framework parameter."""