Why is D significantly slower than C# in this instance?

[bachmeier]

On Wednesday, 12 April 2023 at 13:13:42 UTC, Ali Çehreli wrote:
> On 4/12/23 05:19, WebFreak001 wrote:
>
> > Otherwise this currently always doubled the time, since you
> added the
> > total (converted) seconds twice.
>
> I am beginning to think performance comparisons are trickier 
> than they look. ;)
>
> Ali

Ironic that it takes so long to do a proper performance 
comparison when the only reason to do it is to save time.