Audio synchronization issues occur when streaming in Full HD on the iPhone

I'm experiencing an audio synchronization issue that only occurs in the iPhone browsers (Chrome and Safari). When I'm streaming in Full HD (both BASIC_FULL_HD and STANDARD), the video starts to lag behind. An easy way to simulate this is by using the official example: https://stream.ivs.rocks. I've tried various modifications, but I can't seem to adjust it.

This issue hasn't been observed on Android, Mac, or Desktop.