I am getting a lot of calls to a selector "setValue:" from a slider
control - but setting this value takes an considerable amount of time.

In order to keep the UI responsive I need to rate limit the actual
calls or move the value setting into an async background queue.
While the queue sounds like the most easiest way around this, queuing
the calls isn't really what I need either as only the last recent
value in the queue is of interest.

Right now I am not sure how to tackle this best yet.
Any thoughts?

cheers,
Torsten
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