> AFAIK performance is not a priority for OpenBSD project - security is

TBF that was the case historically, but they have absolutely been putting in an effort into performance in their more recent releases.

Lots of stuff that used to be simply horrific on OpenBSD, such as multi-peer BGP full-table refreshes is SIGNIFICANTLY better in the last couple of years.

Clearly still not as good as FreeBSD, but compared to what it was...