>>12028457
DOOM isn't supposed to look crispy as shit, that's a result of playing on modern displays. DOOM on a CRT looks very smooth. I get it, since blurring approximates the smoother look of the game as it would've been, though I grant it never really looks right and personally I'd rather just accept the crispiness over filtering if I couldn't use a CRT.
That said, if you want the best of both worlds, play the Xbox 360 XBLA port. Not exactly sure what they did there, but man that version just looks so right.