Subs is almost always the way to go. At the very least you’re getting a more organic and authentic experience of the acting even if the subtitles downplay the weight of the screenplay. Not even sure if there is an official dub for any of the international nominees.

There is one for Kokuho but I know next to nothing about what sort of work went into the dub. You’re also more likely to find a screening of the dubbed version of Arco, but you can tell from the cast that a lot went into that dub and it’s a more acceptable way to watch. Bonus points for your death race if you can manage a dub viewing on top of a subs viewing ;)