One thing I noticed is your addons causes some serious console spam.
Add-Ons/Support_Rendermen/server.cs (667): Unable to find object: '0' attempting to call function 'bottomPrint' BackTrace: ->Player::CanSeeLoop
is spammed frequently on my server. Might want to fix that.
Also, for some reason, any time I am on the server it seems renderman attacks are way less frequent and deadly (usually only killing one or two people), but if I leave it will be way more frequent and killing more people (usually 4+ on a 30 person server). Like literally a couple minutes after I leave there will be an attack like every 3-4 minutes but when I join it just shoots down to like 15+.
edit: also the console error spam ultimately leads to the server crashing. It's pretty unstable right now.