Ugh, thats crazy stuff.. I remember playing DOOM on my 386DX40 and peformance was not good. I had to reduce screen size and do double pixels. 486SX25 peformed much better, especially when I overclocked it to 33MHz.
Nice, but the FPS amount doesn't seem to change.
On IWADS, did you try the FreeDOOM ones? Here you cat get
(via gopher sorry) a daily build I made for FreeDOOM and Blasphemer (Free replacement for Heretic) in a zip file:
gopher://texto-plano.xyz/9/~anthk/doom/wads.zip
freedoom1.wad and freedoom2.wad are the Doom and Doom II IWAD replacements, freedm.wad it's for multiplayer matches.
Oh, cool. I guess some items such as buttons could be
redesigned as a single or double rectangle with single pixels and keeping the walls as simple colours as before.
An optimized Doom for the 386.
Seriously, proper Tandy / CGA / EGA / Monochrome graphics is on the to-do list.
gopher://texto-plano.xyz/9/~anthk/doom/wads.zip
freedoom1.wad and freedoom2.wad are the Doom and Doom II IWAD replacements, freedm.wad it's for multiplayer matches.
https://youtu.be/DQr-xqS3n4c?si=KsQf3pvniKaszPy