Has anyone had any luck reproducing the benchmark figures given for the smallpt program? When I try, gcc handily beats nim in the multi-threaded scenario and th

Has anyone had any luck reproducing the benchmark figures given for the smallpt program? When I try, gcc handily beats nim in the multi-threaded scenario and they are neck and neck in the single-threaded one. For 10 samples per pixel: g++ multi-threaded : 33.52 nim multi-threaded : 36.90 g++ single-threaded: 75.78 nim single-threaded: 75.95 nim 1.2.0, g++ 10.1.0. I used the flags -O3 -march=native -mtune=native -Wall -Werror for gcc and the default flags for nim.