It’s not really free frames though. It’s no different to motion interpolation on TVs that makes everything look soap opera-like. The game is still playing at the lower framerate, and the disconnect between your input running at one framerate but what you’re seeing looking like it’s running at another is going to feel “off”.
I don’t think frame generation is crap outright, it’s still free frames, it’s just only really useful when you’re already at a solid frame rate.
It’s not really free frames though. It’s no different to motion interpolation on TVs that makes everything look soap opera-like. The game is still playing at the lower framerate, and the disconnect between your input running at one framerate but what you’re seeing looking like it’s running at another is going to feel “off”.