the problem seems to be related to positioning/targeting. i was on a light scout crashsite (small town, crashed scout in left corner) when i noticed that the 0% chance crashy enemies don't have the square below them light up in red, instead a red square on the left corner of the map lit up red (same corner for different enemies and positions), and you can kill them just fine without any ctds if you use grenades.
and i still get them despite fixing the weapons_gc bug and starting a new game, so i don't think it's related to that.
