Iphone 13 Promax Safari PDF Lag

HI, I recently upgraded to the Iphone 13 Promax. While browing PDF files in safari, scrolling of PDF lag and freezes before resuming. I have no such issues with Iphone 11 pro max with the same OS.


Safari address bar also sometimes goes missing and i have to close and reopen safari for the address bar to reappear.

iPhone 13 Pro Max, iOS 15

Posted on Oct 29, 2021 5:31 AM

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Posted on Dec 21, 2021 7:14 PM

I’m 99.99% sure it’s the variable refresh rate of the screen that’s the problem here. As a workaround, I’ve worked out you can go to Settings - Accessibility - Motion and turn the Limit Frame Rate setting on. This will stop the issue. Pretty bad though that you need to limit the frame rate.


I have called Apple back, given them all the details (including a video of the issue and system diagnostics from the phone) to a senior technician who is raising this with the engineering team and will let me know what they say.


However the workaround I mentioned above does work.

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Iphone 13 Promax Safari PDF Lag

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