Performance impact using culture invariant resources

I would lik开发者_开发技巧e to know the performance impact of using the culture invariant resources instead of culture specific ones.

For example, we plan to deploy a website and not have any en-US resources. This is because our culture invariant resources are always identical to the en-US resources. Is this a good idea ? What are the cons?

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There's nothing wrong with what you are planning to do and no significant performance issues in comparison to using culture specific resources.