Thanks guys.
FYI : C-S CZ ( using "cl_showfps 1" ) reports fps between 30 to 60. The counter changes too rapidly to get a correct ( or average ) figure. Not bad for a <S>antique</S> ... uuuhhhh ... classic PC, what ?
Strangely when I'm killed, and watching via "free chase cam", the fps actually seems to go up between 50 to 70+ ! Didn't know graphics cards could sense whether I'm alive or not ;-) .