I never ment I'll make the char stats and inventory client-side. Thats something that needs updating once every minute, for example. But the position is constantly updating.
Nevermind the problem I wont use it. I just tought from that statement from the manual, that I can use client-side movement now.

I have a prediction that is off by 20 quants, and I cant avoid it, because the engine moves things differently on high speeds. I'll try to make it a little more precise, but I doubt I'll get closer to the truth.

Client-side movement would be best, but I guess it'll never happen...

PS.: Anyone can think of a way to make the rendering 100ms late? Like in Counter-Strike Source.