360 video low frame rate on iOS 14

Description:

• A-Frame Version: 1.0.4
• Platform / Device: iOS 14 / iPhone 7 & iPad gen 6 & iPhone XS max & iPad Air 2

Hi there, I have an A Frame implementation for iOS which displays 360 videos. The implementation is created in html and is loaded through a WKWebView so that it can be opened on iOS. The videos are played using an a-videosphere tag.

Before updating to iOS 14 there were no issues with this implementation but after updating frame rate issues have arisen. Previously the videos were running at a comfortable frame rate around 30 depending on device. On iOS 14 the frame rate is as low as 5 fps depending on device.

This has been tested on 4 devices running iOS 14 including an iPhone XS max which is very powerful and shouldn't struggle. The very same IPA file was loaded on to an iPhone 6 running iOS 12 and the frame rate was acceptable.

From testing it is clear there is an issue with iOS 14 possibly not utilising the full power of the device.

If anyone has experienced similar issues or has any comments it would be appreciated.
Thanks.

No repository file or test is named. Reproduce the a-videosphere playback in a WKWebView on the listed iOS 14 devices and compare it with iOS 12, recording frame rates and device differences. Done would require identifying a repository-level cause or confirmed fix for the low frame rate.