Is Debian 12 performance slower than older versions?

I recenly tried to upgrade a server from Debian 9 to latest version (12). After installing on a fresh server with the same hardware and without installing absolutely any packages, I faced with a lower performance of about 8 times. I tested with a couple of benchmarks. For example: # time openssl genrsa 4096 The result on Deb 9: real 0m0.377s user 0m0.364s sys 0m0.008s And on Deb 12: real 0m2.803s user 0m2.795s sys 0m0.004s I tested also on Debian 11 which was more like Debian 9. It seems there is a problem with Debian 12. Does anybody know what's happening?