I created a vorpx shortcut from the steam executable with parameter -DX9 in Target.
“C:\Program Files (x86)\Animation Labs\vorpX\vorpControl.exe” “C:\Program Files (x86)\Steam\steamapps\common\Murdered Soul Suspect\Binaries\Win64\Murdered.exe” -DX9
I also followed the pcgamingwiki for
Skip intro videos
Disable Chromatic Aberration
Mouse smoothing
I also disabled in-game vsync which forces 30fps and forced vysnc and triple buffering with Nvidia GPU control panel so that game no longer runs at 30fps. Cutscenes are always 30 FPS though.
Game does not crash anymore probably because of the -DX9 but I listed the other changes just in case.