At the beginning 50-70 fps, after 1-2 minutes, with the appearance of several ragdoll, fps drops to ~20 (i78750h/gtx1070/32gb). =/
UPD: After a nightly 25MB update and a complete reinstall, it increased fps 80-90, but after time and 5-10 ragdoll still fps drops to 20.
UPD2: I don't understand what it depends on. In the other case when I spawn 10 ragdolls and then delete them everything is fine, fps returns. But in other cases it doesn't.