[knot-dns-users] Too long validation time for new version

Hello, Recently, my hidden master has had two upgrades: one from 3.6.0 to 3.6.1, and another from 3.6.1 to 3.6.2. I found that the time between "Knot DNS 3.X.Y starting" and "server started answering" has increased significantly for versions 3.6.1 and 3.6.2. I have a large DNSSEC-signed zone with about 2,700,000 records, and I have set |dnssec-validation|to |on|. For versions 3.5.8 and 3.6.0, it took about 4 minutes to restart; after 3.6.1, it took 47–48 minutes. Best Regards, SUN Guonian