diff --git a/codeflash/optimization/function_optimizer.py b/codeflash/optimization/function_optimizer.py
index 1fc86a5a6..93def83c0 100644
--- a/codeflash/optimization/function_optimizer.py
+++ b/codeflash/optimization/function_optimizer.py
@@ -362,7 +362,7 @@ def determine_best_candidate(
         candidates = deque(candidates)
         # Start a new thread for AI service request, start loop in main thread
         # check if aiservice request is complete, when it is complete, append result to the candidates list
-        with concurrent.futures.ThreadPoolExecutor(max_workers=1) as executor:
+        with concurrent.futures.ThreadPoolExecutor(max_workers=2) as executor:
             future_line_profile_results = executor.submit(
                 self.aiservice_client.optimize_python_code_line_profiler,
                 source_code=code_context.read_writable_code,
@@ -382,8 +382,8 @@ def determine_best_candidate(
                     if done and (future_line_profile_results is not None):
                         line_profile_results = future_line_profile_results.result()
                         candidates.extend(line_profile_results)
-                        original_len+= len(candidates)
-                        logger.info(f"Added results from line profiler to candidates, total candidates now: {original_len}")
+                        original_len+= len(line_profile_results)
+                        logger.info(f"Added {len(line_profile_results)} results from line profiler to candidates, total candidates now: {original_len}")
                         future_line_profile_results = None
                     candidate_index += 1
                     candidate = candidates.popleft()
@@ -1086,8 +1086,8 @@ def run_and_parse_tests(
                     pytest_cmd=self.test_cfg.pytest_cmd,
                     pytest_timeout=INDIVIDUAL_TESTCASE_TIMEOUT,
                     pytest_target_runtime_seconds=testing_time,
-                    pytest_min_loops=1,
-                    pytest_max_loops=1,
+                    pytest_min_loops=pytest_min_loops,
+                    pytest_max_loops=pytest_min_loops,
                     test_framework=self.test_cfg.test_framework,
                     line_profiler_output_file=line_profiler_output_file,
                 )
diff --git a/codeflash/verification/test_runner.py b/codeflash/verification/test_runner.py
index fb53d8652..d8c58eb9a 100644
--- a/codeflash/verification/test_runner.py
+++ b/codeflash/verification/test_runner.py
@@ -182,8 +182,8 @@ def run_line_profile_tests(
             f"--timeout={pytest_timeout}",
             "-q",
             "--codeflash_loops_scope=session",
-            f"--codeflash_min_loops={pytest_min_loops}",
-            f"--codeflash_max_loops={pytest_max_loops}",
+            "--codeflash_min_loops=1",
+            "--codeflash_max_loops=1",
             f"--codeflash_seconds={pytest_target_runtime_seconds}",
         ]
         result_file_path = get_run_tmp_file(Path("pytest_results.xml"))