[ceph-users] block.db/block.wal device performance dropped after upgrade to 14.2.10

Good day, cephers! We've recently upgraded our cluster from 14.2.8 to 14.2.10 release, also performing full system packages upgrade(Ubuntu 18.04 LTS). After that performance significantly dropped, main reason beeing that journal SSDs are now have no merges, huge queues, and increased latency. There's a few screenshots in attachments. This is for an SSD journal that supports block.db/block.wal for 3 spinning OSDs, and it looks like this for all our SSD block.db/wal devices across all nodes. Any ideas what may cause that? Maybe I've missed something important in release notes?