Fix input lag
Fix input lag

Summary: This also boosts us from ~55fps in an iphone6 to 60 all the time.

Test Plan: you can create a spam of events by using the scrollwheel, mouse move, and keyboard at the same time in the mac app, which can demonstrate the lag when scrolling the listing view.

Reviewers: cbrown

Reviewed By: cbrown

Subscribers: mike.naquin

Differential Revision: https://phabricator.watchonair.tv/D899

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