b_fixedphysics is a server-side setting with similar goals to pmove_fixed. b_fixedphysics 1 avoids rounding the velocity at all (Removing the framerate-dependent behavior in movement); however, it offers b_fixedphysicsfps to adjust the jump velocity to emulate the old framerate-dependent behavior. This is the best of both worlds—no movement speed problems (as several people observed at 333fps) nor any of the problems that pmove_fixed brings with it (some parts of the game behave poorly at high fps, most notably mounted MG42 and mortar aiming), but the same jump heights trickjumpers would kill us for taking away. b_fixedphysics 2 is a cross between normal behavior and fixed behavior, which effectively just caps the maximum framerate-dependent behavior to 166fps.