UICollectionView performance - _updateVisibleCellsNow

Question

I\'m working on a custom UICollectionViewLayout that displays cells organized by day/week/month.

It is not scrolling smooth, and it looks like the lag i

Answer 1

Here is Altimac's answer converted to Swift 3:

cell.layer.shouldRasterize = true
cell.layer.rasterizationScale = UIScreen.main.scale

Also, it should be noted that this code goes in your collectionView delegate method for cellForItemAtIndexPath.

One more tip - to see an app's frames per second (FPS), open up Core Animation under Instruments (see screenshot).