У вашего броузера проблема в совместимости с HTML5
I made changes to the mod. Watch at 2x speed for 60fps.
Bloodspeed https://www.doomworld.com/forum/topic/103298-bloodspeed-beta-2/
Guncaster https://forum.zdoom.org/viewtopic.php?f=43&t=60984
Target Spy https://forum.zdoom.org/viewtopic.php?f=43&t=60784
Sound Caulking https://www.doomworld.com/forum/topic/71133-sound-caulking-now-on-idgames/
Smooth Fluids https://forum.zdoom.org/viewtopic.php?f=37&t=55161
Minor Sprite Fixing Project https://www.doomworld.com/forum/topic/62403-doom-2-minor-sprite-fixing-project-v19-release-updated-12718/
Brightmaps Collection for GZDoom https://allfearthesentinel.net/zandronum/wadinfo.php?id=1990
Doors Stay Open http://forum.zdoom.org/download/file.php?id=12049
Soundfont Replacement http://www.alsa-project.org/~james/sound-fonts/8MBGMSFX.SF2