have you tried playing it with SMT disabled? i'm curious if theres a performance difference.
I wouldn’t expect much - Quake II’s CPU demands are trivial. I genuinely think the Ogg Vorbis support for music playback would dwarf the demands of the game itself. Running Q2RTX with the OpenGL renderer reliably nets between 920-1000 fps on my config at 4K!
The overwhelming share of the computational grunt needed will be demanded of the GPU itself. I expect any weird stuttering to be down to things like vsync being enabled by some part of the display stack despite what Q2RTX expects, or similar issues. Out of curiosity how do you configure or disable SMT? I’ve been meaning to try it in order to determine its impact on some other titles, chief among them GZDoom…