I just downloaded this from the itchio bundle and the game is chugging to an insane degree. I have a really powerful computer so I'm really confused about this.
First time I hear that! Is it better in windowed mode? Have you tried with vsync on or off in the settings?
I figured out the problem: having the vr headset attached was slowing the game to a crawl.
Oooooh interesting! Thanks for sharing the solution!