--- a/gr-fec/python/fec/CMakeLists.txt
+++ b/gr-fec/python/fec/CMakeLists.txt
@@ -71,6 +71,17 @@
     )
 endif(NOT GSL_FOUND)
 
+# These take too many resources on build machines
+list(REMOVE_ITEM py_qa_test_files
+  ${CMAKE_CURRENT_SOURCE_DIR}/qa_polar_decoder_sc_systematic.py
+  )
+list(REMOVE_ITEM py_qa_test_files
+  ${CMAKE_CURRENT_SOURCE_DIR}/qa_polar_decoder_systematic.py
+  )
+list(REMOVE_ITEM py_qa_test_files
+  ${CMAKE_CURRENT_SOURCE_DIR}/qa_polar_encoder_systematic.py
+  )
+
 foreach(py_qa_test_file ${py_qa_test_files})
     get_filename_component(py_qa_test_name ${py_qa_test_file} NAME_WE)
     GR_ADD_TEST(${py_qa_test_name} ${QA_PYTHON_EXECUTABLE} -B ${py_qa_test_file})
