Right now there is an on_damage event handler, on death maps this is incurring a fairly significant UPS hit. It would be useful for that to not be registered at all in such cases via a mod-setting.

i will look into it when i find the time

Awesome thanks! That event it seems is to just slow down biters a little bit more that are in water and were just damaged, which is not really a noticed feature by anyone anyway, so a mod option to disable it and not register the event hook at all would be fantastic. :-)