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by josephg 1006 days ago
If you want to know if those 200ms matter, try adding 200ms of artificial latency on every page load for a week and see what it does to conversions.

As a first approximation, the difference between 600ms and 800ms will probably be similar to the difference between 800ms and 1000ms. You should be able to get a rough figure of what that difference is with 1 line of change to your code.