You will need to install a user script manager extension to install this script.
From the menu, you can edit autoheal settings in real-time. If you want to change your toggle keycode and need assistance, here's a page that will help you: https://www.toptal.com/developers/keycode
Make the autoheal anti-shame by setting the speed to a value above 120.
By the way, the values you input in the menu will be saved even if you reload the page.