I have battle animations reduced, and I can't actually tell a difference. It still allows all the animations go through before you get to concede against whatever horribly balanced cards just stormed your face.
The interface is honestly infuriating. You can't examine cards in play while anything is happening, if you want to concede before your opponent's lethal takes eighteen moves to execute, it drops you out of the menu and you are forced to endure 20s of their PDKs going off. Buttons don't always register feedback. Even if you manage to click concede, it might not even concede and still lets their 5 storms swing for your face.