It is not a big problem but on my computer I got lot of freezes during game when its on. And I have some sound timing/volume problems tat may be the reason.
Another bug is crossbow reload time: after you shoot nock is fast, when reload it is slow. Also a crossbow should have less sensitivity when aiming + when aiming fps is low.
ps game using russian as menu language
ps ps thanks for the game 
I think it’s just because that feature isn’t implemented in BMS.
Black Mesa uses source sdk base 2007 which doesn’t support the multicore rendering option.
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.