There could be a number of reasons why the animations are lagging on iOS 16 and above. Here are a few possible explanations:
1. Resource usage: It's possible that the animations are more resource-intensive on iOS 16, which could cause them to lag on certain devices. This could be due to changes in how iOS 16 handles graphics or changes in the hardware of the affected devices.
2. Software bugs: It's also possible that there are bugs in the software that are causing the animations to lag. This could be due to issues with the operating system, app code, or third-party libraries.
3. Settings or preferences: Another possibility is that there are settings or preferences on the affected devices that are causing the animations to lag. For example, if the devices have battery-saving settings enabled, this could limit the resources available for graphics and cause lag.
To troubleshoot the issue, you could try the following steps:
1. Check for software updates: Make sure that all devices are running the latest version of iOS 16. Apple often releases updates that address performance issues and bugs.
2. Adjust settings: Experiment with adjusting settings on the affected devices to see if this improves performance. For example, you could try disabling battery-saving settings or adjusting graphics settings.
3. Check app code: If the animations are part of an app, check the code to see if there are any issues that could be causing the lag. You could try optimizing the code or using different techniques to achieve the same effect.
4. Contact Apple support: If the issue persists, you could contact Apple support to see if they can provide further assistance. They may be able to diagnose the problem and suggest a solution.
5. Use a performance monitoring tool: You can use performance monitoring tools to identify the root cause of the lag. These tools can help you identify resource usage, CPU utilization, and other metrics that could be affecting the animation performance. Some popular performance monitoring tools for iOS include Xcode Instruments, Instabug, and Firebase Performance Monitoring.
6. Test on different devices: If possible, test the animation on different devices running iOS 16 to see if the issue is specific to certain models. This can help you identify whether the issue is related to the hardware or software.
7. Simplify the animation: If none of the above steps resolve the issue, you could try simplifying the animation. This could involve reducing the number of elements in the animation, using simpler graphics, or using a different animation technique.
It's important to note that performance issues can be complex and may require a combination of these steps to resolve. If you're not sure how to proceed, you may want to consider working with a developer or consulting with Apple support to get additional guidance.