Neither term is great from what we understand because they mix together people and cultures across a vast area and treat them as the same.

However, from a quick internet search ‘oriental’ is outdated and creates a false image of what some people from some of those regions are like now because it relies more heavily on outdated stereotypes and ideas about some of the countries and peoples involved in the regions.

In general it is better to be specific about what countries/people are meant if that’s at all possible.