[singron]

This also depends on whether you distro is using zlib or zlib-ng, which is significantly faster.

[acqq]

Do you know which distributions are using zlib-ng for zip and unzip programs?

If I understand, the improvement would be around 3 times less CPU use for the comparable resulting size, but I see it here shown for "minizip" not zip:

https://github.com/zlib-ng/zlib-ng/discussions/871