Initial Delay UICollectionView

Question

I found several posts already about SO regarding UICollectionView scrolling, but most of them related to images, and my situation was slightly different and simpler.

I have a uicollectionview that shows the current year, last year, and next year (so 36 sections, with x the number of days per section). All of this is sorted by load of browsing and pretty fast as I did.

However, the problem is that the initial scroll, which takes place in the uicollectionview window, has a very small but noticeable lag, and then all this oil.

func collectionView(collectionView: UICollectionView!, cellForItemAtIndexPath indexPath: NSIndexPath!) -> UICollectionViewCell!
    {

        let day = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! CalendarDayCollectionViewCell

So, you can see here, I have a custom cell, and I am accessing it as shown above. If I am in the current month, then the above is called 31 times (or how many days in this month).

Even if I comment on EVERYTHING in the code above (and just “day” as it is, without another code below), it is still lagging.

Other things I've tried:

• Wrap everything I can in dispatch_async
• Removing almost all bits of code to launch a skeleton page. It still has an initial lag, it is almost as if the sheer number of sections / elements is a problem.

So, one thing that I read is that I cause the cell to reload every time and create an initial delay?

let day = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! CalendarDayCollectionViewCell 

Someone wrote that you need to make this singleton and stop reinstalling it, as well as access the same thing over and over again. It's true? I have not seen any code that actually did this. I tried something like this:

if (day == nil)
        {
            day = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! CalendarDayCollectionViewCell
        }

nil, .

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