@abj it was pretty bad before turning off 4k. Now it's at least playable.

@mitu said in FastForward and SlowMotion can't be removed - once hotkey is set to "nul":

input_toggle_fast_forward

Thanks for this information. It was what I was doing in the /all configuration already however I seemed to have figured out half of the problem.

I am deleting the retroarch.cfg in the /arcade folder before every test. What turns out is that when that config gets populated it is not using my modified retroarch.cfg file in /all - it is adding the "space" button into it every time.

Where is the emulator retroarch cfg created from if not from the /all?

The other issue was not slowmotion but frame_advance - which I have now also resolved by modifying the action rom cfg file manually.

Thanks for your time.

Thanks! I guess it's just a matter of time then.