> > ZTree does extraction file by file, which will cause heavy
> performance
> > issues extracting many files from large solid archives.
>
> Thanks, but I think you missed the color="#003399"> (*non* solid) part of my post. This
> is *not* about a solid archive (expected) side-effect, but rather a 3x
> discrepancy between the overhead of extracting the same files between ZIP
> and RAR formats, unlike the command line which gives comparable times.
>
Obviously I missed that bit.
So probably the unrar*.dll is causing your issue, but I expect you have worked that out for yourself, given your other ZEP post for an option to disable the un*.dll's.
Ben