[ios] Swiping a listview containing platform views has noticeable jitter on Promotion devices #116640
Description
After flutter/engine#37434 landed, there is still noticeable jitter when swiping a listview containing platform views on the iPhone 13 Pro Max. However, it's very smooth on non-ProMotion devices, e.g., iPhone 8. As shown in the video below.
/cc @cyanglaz
RPReplay_Final1670398614.MP4
Confusingly, reducing the frame rate to 80 makes the swiping smoother, but reducing it to 60 is just as bad as 120.
According to the official documentation (link), the issue seems to be that the frame rate the system finally chooses is 80, but the flutter rendering pipeline is 120. ;-)
Core Animation arbitrates all the animations it presents on the screen and determines the refresh rate at any particular time.
Steps to Reproduce
git clone -b task/displaylink [email protected]:0xZOne/platform_view_performance.gitcd platform_view_performanceflutter run
Related issue: #101653
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