Physics engine in AssaultCube (ragdoll)

[Mr.Floppy]

however, in sauer you can enable and disable effects, thus the game runs well on any machine : ).
[...]

That doesn't apply for any machine actually. I can disable all and everything, but Sauerbraten won't get beyond 30 FPS at all. ;)

Thanks to everyone giving hints and help on that issue. I meanwhile understand a little more about the possibilities having models with skeletons, but as FlowTron mentioned, I doubt the expected benefit would cover the costs, so to say.