-fast option is broken
In doom, ultimate doom, and doom 2, using deng 190b5.1 with no addons, the pistol, shotgun, and double shotgun all lag slightly before firing, maybe 50 to 100ms. None of the other weapons do this.
Single player game, no addons
Also, when playing on nightmare difficulty, if you die and reload from a save, or respawn at the beginning of the level, fast monsters (fast projectiles, fast running/attacking pinky demons) are turned off, and there is no way I can see to turn them back on, expect start a brand new game. No addons