Does the new dynamic validation speed up the traditional validation?

If dynamic validation is used, will the whole pipeline validation see what has already be dynamically validated and not validate those expressions and therefore be faster?

No, the results of the dynamic validation are not saved. Evaluating an expression over 50 documents isn’t going to be expensive, so there wouldn’t be an advantage to saving them. Also, the dynamic validation is done at the platform level, it’s still up to the Snap to determine how to use the results of the evaluation.