This is a reposting of my existing mod on nexusmods.

mod link[www.nexusmods.com]
After downloading the mod, open the folder and extract the contents to Granblue Fantasy Versus\RED\Binaries\Win64.

Once in game, press scroll lock to toggle the outline on or off.

If you want to change the key bindings, simply open d3dx.ini and find this:

[Key1]
Key = VK_SCROLL

and change it to whichever key you want. Just make sure it's in the Microsoft virtual key code format

Notes:

• This was created and tested with Nvidia hardware.
  
• If you want to combine this with already existing shader mod, take the .txt files from the ShaderFixes folder and put them in the ShaderFixes folder of the already installed shader mod.

Either remove the mod files manually or use the uninstall.bat file.