The performance of the Edit Mode and modifier bevels are about the same, and the shader bevel is going to be slower than both of those when it comes to rendering. But, if you bake it to a normal map and you’re already using normal maps anyway, it would be faster for performance. So, it really depends on what you’re doing with the object, what the final use case for it is, but overall, the difference isn’t going to be enough to need to worry about.
