Sequoia's encryption is slow compared to GnuPG's

% dd if=/dev/urandom bs=1M count=1024 status=none | /bin/sq encrypt --recipient-cert foo.pub --compression none | bar -ns >/dev/null
   1.4GB at   51.4MB/s  elapsed:   0:00:27
% dd if=/dev/urandom bs=1M count=1024 status=none | /bin/sq encrypt --recipient-cert foo.pub --compression none --binary | bar -ns >/dev/null
   1.0GB at  128.0MB/s  elapsed:   0:00:08
% dd if=/dev/urandom bs=1M count=1024 status=none | /bin/gpg --always-trust -er foo --compress-algo none --armor | bar -ns >/dev/null
   1.4GB at  138.7MB/s  elapsed:   0:00:10
% dd if=/dev/urandom bs=1M count=1024 status=none | /bin/gpg --always-trust -er foo --compress-algo none | bar -ns >/dev/null
   1.0GB at  170.7MB/s  elapsed:   0:00:06