Frame rate going too high on macOS - any way to limit it?

I noted that the game is running at 1000+ FPS on my Intel Macbook Pro. This puts a heavy load on the GPU (~90% as shown in Activity Monitor) and makes the fan rev high.
Is there any way to limit the frame rate to 60? I tried turning on both VSync and Full Screen mode, but it only cuts the frame rate to about 600.
I’m using a 2018 Macbook Pro with macOS Monterey (12.0.1), and the latest version of Project Outfox.
Any help would be much appreciated!

Hello there. This is caused by a bug introduced on macOS Monterey: they added a ‘variable frame rate’ system, which has been made for their new ‘120/144hz’ screens and has been causing games that don’t use it to misbehave.

We don’t actually support the VFR system yet, as there is no documentation on it available. We’re awaiting a fix from Apple and documentation to implement them on OutFox.

I see. Thanks a lot for the info!