OBS Studio How to setup instant replay in OBS Studio

Hi! looking for an instant replay functionality like this:
Hotkey 1 pressed = replay is saved to file but not played
Hotkey 2 pressed = latest saved replay is played in the ongoing broadcast
Hotkey 3 pressed = replay is saved AND instantly played in the ongoing broadcast.

Is this possible to achieve with this script?

So far I have only managed to get the "Hotkey 3" function to work wiht this script.

Thanks in advance for any help!

Instructions do not work anymore.

I had this working beautifully last year but got a new computer and I'm having trouble getting it set back up.

The frame rate on my replays seems to be 1 frame per 8 seconds. It's awful. When I view the saved replay videos independently it's the same. What am I doing wrong?

Is there a way to set it up so if you use the shortcuts created for the stream deck. I have it set to save replay buffer but it doesn't trigger the replay like I thought it would. Thanks in advance.