Loaded up an old save from the last level which Steam Cloud synced from my Windows PC from several years ago. The game is definitely playable and completable but the framerate isn't as smooth as it could be.
🖥 1920 × 1080
⚙️ Low graphics settings
40 FPS, smooth gameplay, bottom of laptop very warm, If mouse isn't set to stay in window the pointer can disappear, when using steam overlay the pointer is misaligned
🖥 1440 × 900
⚙️ minimal settings, vsync, frame smoothing