Issues

• Crash in E4M6

  bug
  viti95/FastDoom#280 · Filter by author tigrouind opened on Sep 1, 2026

• framerate tanks when close to walls on AMD K6-2

  bug
  viti95/FastDoom#273 · Filter by author sneakernets opened on Jun 11, 2026
  3

• Crash on PC-98 VIPER-JET IBM 486SLC2 upgrade board

  bug
  viti95/FastDoom#272 · Filter by author sneakernets opened on May 27, 2026
  2

• Crash when playing Plutonia demos with Pentium MMX codepaths enabled

  bug
  viti95/FastDoom#266 · Filter by author sneakernets opened on Mar 27, 2026

• Request: Better compatibilty with SBEMU?

  sound
  viti95/FastDoom#265 · Filter by author lord-nt opened on Feb 25, 2026
  2

• Shrieking Crash on IBM PS/2 MCA Architecture - MIDI?

  bug
  viti95/FastDoom#264 · Filter by author PhantomEight opened on Feb 18, 2026
  2

• [Mister FPGA, AO486 Core] FastDoom fails to load if Sound and Music are set to Sound Blaster

  bug
  viti95/FastDoom#262 · Filter by author Greenknight9000 opened on Jan 31, 2026

• Crash using MIDI music + Sound Blaster Direct mode on a Core2 machine

  bug
  viti95/FastDoom#261 · Filter by author viti95 opened on Jan 21, 2026

• [REQUEST] CPU Optimizations (CMOV, MMX)

  enhancement
  viti95/FastDoom#256 · Filter by author dribgnikcom opened on Aug 27, 2025
  3

• Music is incredibly quiet

  bughelp wantedsound
  viti95/FastDoom#252 · Filter by author GWXerxes opened on Aug 15, 2025
  6

• Partial compability with original DOOM.WAD (16.12.1993)

  enhancement
  viti95/FastDoom#245 · Filter by author n1tr0ms opened on May 25, 2025

• F1 to take screenshot does not work?

  viti95/FastDoom#241 · Filter by author fabiensanglard opened on May 11, 2025
  2

• [REQUEST] toggleabe options, always run, auto change weapon pickup

  enhancement
  viti95/FastDoom#238 · Filter by author Sol1vaN opened on Apr 24, 2025

• [BUG] micro skip mouse movement when uncap fps / frame pacing

  bug
  viti95/FastDoom#237 · Filter by author Sol1vaN opened on Apr 24, 2025
  2

• NMI causes game crash

  bug
  viti95/FastDoom#234 · Filter by author oerg866 opened on Mar 13, 2025
  4

• "Wobbly" sound on SB AWE32

  bug
  viti95/FastDoom#233 · Filter by author MrSzalonna opened on Mar 10, 2025
  4

• FM synth issues list

  research
  viti95/FastDoom#231 · Filter by author sneakernets opened on Mar 5, 2025
  1

• Pocket 386 Support/Optimization

  enhancement
  viti95/FastDoom#227 · Filter by author sneakernets opened on Feb 17, 2025

• WHY does FastDoom FM music sound so much better than the original DOOM?

  question
  viti95/FastDoom#226 · Filter by author vanfanel opened on Feb 4, 2025
  7

• PicoGUS 2.0 tests

  bug
  viti95/FastDoom#202 · Filter by author viti95 opened on Jul 29, 2024

• FDSETUP crash

  bug
  viti95/FastDoom#198 · Filter by author viti95 opened on Jul 4, 2024
  1

• VESA modes card testing

  graphicshelp wanted
  viti95/FastDoom#185 · Filter by author viti95 opened on Apr 3, 2024
  5

• Off by 1 rendering errors on VESA 1024x768 (both direct and backbuffer)

  buggraphics
  viti95/FastDoom#175 · Filter by author viti95 opened on Jan 25, 2024
  1

• Mixed optimization flags

  enhancement
  viti95/FastDoom#144 · Filter by author RamonUnch opened on May 5, 2023
  1

• Assembly optimization for walls

  enhancement
  viti95/FastDoom#143 · Filter by author Awesoken2 opened on Apr 29, 2023
  21