Toggle Autoheal by pressing "P", access the menu by pressing "Esc" to adjust settings such as Speed, Multiplier, HP Threshold, or even customize the Toggle Keycode.
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.