Expected time to get fast ring insider from threshold

I want to get the fast ring update on my surface 3. I have 10586.494 installed. So from past experiences and from the forums, I know it takes time between when you select fast ring and when you actually get the update. How long is the wait?

If anyone is updating through the path I've described (10586 -> 14393), can you share your experience with the delay?

Thank you

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