IME at least (2560x1440 @ 144hz) if you turn vsync off, it runs at 30fps. but if you turn vsync on, it will run at your monitors refresh rate. this is odd behavior but it seems consistent with other users at least ( https://steamcommunity.com/app/1054490/discussions/0/2970650017901971274/#c2970650017905554480 )
This is a requested edit. This notice will be removed when resolved.