Iglistkit: Scrolling is slightly choppy

[jlanesmith]

I integrated IGListKit into an app but the scrolling is slightly choppy/jerky, even after all the cells have loaded. This "choppiness" wasn't an issue when just using UICollectionView. The sizes of the cells are all constant. Suggestions?

New issue checklist

• [x] I have reviewed the README and documentation
• [x] I have searched existing issues and this is not a duplicate

General information

• IGListKit version: 3.1.1
• iOS version(s): 10.1.1
• CocoaPods/Carthage version: 1.3.1
• Xcode version: 9.0.1
• Devices/Simulators affected: No
• Reproducible in the demo project? (Yes/No):
• Related issues:

[rnystrom]

@jlanesmith have you run Time Profiler to see what the issue is?

_{Sent with GitHawk}

[jlanesmith]

In the cellForItem() function, each cell needs to load several images, which takes time. Is there anything that IGListKit can do to improve this?

[rnystrom]

@jlanesmith image loading is beyond the scope of what IGListKit does (trying to keep the lib very focused). Some thoughts:

• Make sure all of your loading is happening off of the main queue
• Look into libraries that do image loading, my fav is SDWebImage
• Here's a more complicated example used in GitHawk

You could look into the "working range" example in our demos app and see if that's useful, though I'd only recommend prefetching media once you really need it.