PDL 2.021 using Strawberry Perl 5.32.1.1 PDL edition (max 8 workers on Windows)
perl demo_win.pl 1e7 :  3.778 seconds
perl demo_win.pl 1e8 : 37.008 seconds

PDL 2.079 using Strawberry Perl 5.32.1.1 PDL edition (PDL updated to 2.079)
perl demo_win.pl 1e7 :  4.143 seconds
perl demo_win.pl 1e8 : 42.302 seconds