FIXED (tentative) reduce number of proc for parallel testing

VM seems overwelmed

sdk/cmake/ctest/ci-setup.cmake

@@ -115,7 +115,9 @@ endif()
 # parallelize ci scripts if possible
 include(ProcessorCount)
 ProcessorCount(NUMBER_OF_PROC)
-if(NOT NUMBER_OF_PROC EQUAL 0)
+# remove some to avoid processor overload
+MATH(EXPR NUMBER_OF_PROC "${NUMBER_OF_PROC}-2")
+if(NUMBER_OF_PROC GREATER 0)
     if(COMPILER MATCHES "GCC" OR COMPILER MATCHES "Ninja")
         set(CTEST_BUILD_FLAGS -j${NUMBER_OF_PROC})
     elseif(COMPILER MATCHES "MSVC.*")