Using longer paint suppression delay for OOPIF might improve page load performance by reducing the number of paints iframes get. But it might also regress visual metrics if painting is delayed too much.
Bug 1698044 Comment 0 Edit History
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Using longer paint suppression delay for OOPIF might improve page load performance by reducing the number of paints iframes get. But it might also regress visual metrics if painting is delayed too much. A patch coming to make it easier to test this.