I don't know what's possible to enable, disable, or modify in the game code using external scripts, but I
would like to request a script that doesn't slow down the game speed after the wasted screen
shows. Like, if you fall down a hill and die, you could see your character's body slide a lot longer
than you normally would with game slowed down.

There are two mods I found that are similar to this, but not the way I want.
https://www.gta5-mods.com/scripts/afterdeath
https://www.gta5-mods.com/scripts/watch-your-death