Dead Island 2 is the sequel dark humor and over the top zombie slaying first person action RPG.
Below we give you our recommended settings to play with on the ROG Ally.
Increase the VRAM to 8GB, you can learn how to do that here.
This is important, Launch the game first and put the game to Fullscreen mode and 720p resolution. Exit the game and open up the command center and turn on AMD RSR.
Using AMD RSR and 8GB VRAM I managed to get a solid 45-60fps in Dead Island 2 making this a playable experience on the ROG Ally.