Tales of Arise follows Alphen, a Dahnan man with amnesia and a mysterious pain-absorbing curse, and Shionne, a Renan woman ostracized for wielding cursed thorns that inflict agony upon anyone who touches her. Drawn together by fate and a shared desire for freedom, they embark on a journey to unite the people of Dahna, overthrow Renan oppression, and uncover the truth behind their intertwined destinies.
Open up Armoury Crate, click Settings, click Operating Mode and click Manual Mode. Now when you open up the Command Center, you can adjust your TDP with the new slider. Set them all to 18W or 20W.
I managed to get a nice balance between performance, battery and visuals with my settings at 900p on the ROG Ally. I averaged above 50 FPS during my playthrough playing at 20W and 40 to 60+ FPS playing at 18W.