I just tested on a ramdisk:
tool cspeed size dspeed
zstd 361 MB/s 16% 1321 MB/s
lzop 512 MB/s 29% 539 MB/s
lz4 555 MB/s 29% 1190 MB/s
If working from files on disk that happen not to be cached, the speed differences are likely to disappear, even on many NVMe disks.(It just so happens that the concatenation of all text-looking .tar files I happen to have on this machine is roughly a gigabyte (though I did the math for the actual size)).