Slow API responses for modules and module items (even when cached)

I'm having an issue with some API requests being very slow to respond. The requests are being made on course homepages. The request in question is specifically for the modules and module items for ...

Link to another module is broken in Android only

We're having an issue in the Android Student App, where links to module pages within a course are not working. However, they work fine on desktop browsers and in the iOS Student App. When checking t...