I use Shade-c only partially, I have switched off most of the functions.
I think I am doing something wrong with pssm,

Code:
// all objects get the SHADOW flag
  for(you = ent_next(NULL); you; you = ent_next(you)) 
    reset(you,SHADOW);

// adjust camera and bias, activate PSSM 
  camera.clip_far = 32000;
  camera.clip_near = 30;
  pssm_fbias = 0.0005;
  pssm_run(3);
 
 
 // Shadow
 mat_shadow.alpha = 25; //transparency of dynamic shadows  
 shadow_mode = IGNORE_SPRITES+IGNORE_PASSABLE+IGNORE_PASSENTS;
 shadow_stencil = 4;
 shadow_threshold = 30; // 80
 shadow_offset = 2.5;
 shadow_lod = 3;
 shadow_range = 30;



Which is located in the main.
So I get a strange bug with the Weapon and the framerate does not look better, the Shadow flag I've selected by Wed. The building model is also 100% closed
I have before long time see a shadow shader who works with gpu here in the forum, but I can not find him any more

here is the screen with (pssm)

The shadow falls dashed on the floor, there is nothing on the building and is missing half from the Weapon.