For some reason, Dragon Ball Z: Kakarot is marked as unsupported by the official verification status on Steam Deck. But after testing it out, it should be Verified, not unsupported.
Thanks to Bandai Namco UK for sending us a Steam Key so we could test this out on Steam Deck, we were stunned at how well this performed.
Prior to the Steam OS 3.4.6 update, there were minor artifacts during cutscenes and the audio sounded like a robot, but the game was still perfectly playable. Since the Steam OS update, however, that is also corrected and now the game runs absolutely perfectly at 60 FPS with minimal power draw.