Make a whatnameyoulike.cfg in the bms\cfg folder and put this in it:

sv_speed_run 90
sv_friction 6
sv_accelerate 50
sv_speed_crouch_crop 0.5

Then add exec whatnameyoulike.cfg to the autoexec.bat in the same folder. Don't use the walk key code found elsewhere on these forums and don't turn on always run. Now you walk at a slower pace and sprint as normal with Shift. Crouching is quicker and there's less friction so you don't slide to a stop like default.

Better to walk slower all the time without having to hold ALT (or any other key) IMO. And you still hear footsteps which you don't with the walk key code.