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There are several solutions to issues concerning RecyclerView in Kivy, depending on the specific problem you are facing. Here are a few general solutions you can try:

1. Use the correct RecyclerView widget: Make sure you are using the correct RecyclerView widget for your specific use case. Kivy provides different types of RecycleView widgets, such as RecycleBoxLayout and RecycleGridLayout. So, choosing the right widget can make a difference.

2. Check the dimensions of your widgets: Make sure the dimensions of your widgets match up to the dimensions of the RecycleView widget. This can be done by setting the size of your widgets using size_hint and size.

3. Implement RecyclerView adapters: RecyclerView adapters handle the interaction between your data and the RecyclerView, which essentially allows you to display your data in the RecycleView. Implementing an adapter in your code can help with data manipulation and display issues.

4. Optimize your code: If you have a lot of data to display in your RecycleView, it may be slowing down your app. To optimize the performance of your app, you can try using lazy loading, which means that the data is loaded only when it is needed. This can help with the performance of your app.

5. Debug your code: Finally, you can try debugging your code to identify and fix any specific issues. This entails looking at the logs to see what errors or exceptions are being thrown and then working to resolve those issues through code optimizations or troubleshooting.