Question Using a slider to change FPS

[reshf]

So the FPS choices in the main menu (90, 120, 144 etc) - I want to place a slider or some sort of UI button I can use to change it on the fly and add it to a subscene. Has anyone used buttons/triggers to be able to do this? I think I did this, but I don't remember how.

The use case to speed up/slow down animations when needed.

Edit: I actually did that with Cycle force, still looking for a solution though

Thanks