Originally Posted by Shimo
As far as I can tell this is also caused by nb_update_Frequency, it seems to be that knockback from melee weapon attacks is ruled multiple times
This happens due to collision between 2 commons is being called more frequently rather than on lower nb_update_frequency.
The extension provides "z_resolve_zombie_collision_multiplier" convar to change multiplier of the collision force.
For reference see this
I was suggested to automatically set this value based on server's nb_update_frequency and now I think it would have been better to do so back then.