Showing Recurring Dates Only Once in a View

In the Views settings you could try turning on DISTINCT? Might be worth a try.

Probably the easiest way to achieve this would be using a view mode instead of fields to display the events instead of fields. Then, in your view mode use the recurring formatter to only show one upcoming instance.

I'm facing this issue right now. Multiple field settings > Display all values in the same row, which is how I would fix this with any other field, is not working as expected.

Event is a two day event. Mon 1-4PM, Tue 1-2PM. The event's smart date field has two entries.

In the view, with "Display all values in the same row" set, it shows both dates+times in two rows... Both rows show the exact same thing.
Unchecking it results in two rows, first with Mon 1-4PM, the second with Tue 1-2PM.

The second is correct behavior, but not useful for my specific use case: listing events people can register for, and you cant register for just one day.
The first behavior is incorrect. And checking Distinct in the query settings doesn't fix it. How do I fix this?

As suggested in #4, using a view mode instead of fields to display your content is the most reliable way to avoid duplicate display.