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Fixed
Fixed in 2022.3.67f1, 6000.0.56f1, 6000.1.8f1, 6000.2.0a4, future release
Votes
0
Found in
2021.3.36f1
2022.3.21f1
2023.2.14f1
6000.0.0b11
6000.1.0a7
6000.2.0a1
7000.0.0a1
Issue ID
UUM-66493
Regression
No
[iOS] Framerate drops when screen is touched on ProMotion devices
How to reproduce:
1. Open the attached Project "FpsDropUnityProject"
2. Build and Run a Development Build on a ProMotion iOS device
3. Connect the Unity Profiler to the running Application
4. On the device, quickly tap the screen repeatedly
5. Observe the Profiler
Expected result: No spikes appear in the Profiler
Actual result: Spikes appear in the Profiler
Reproducible with: 2021.3.36f1, 2022.3.21f1, 2023.2.14f1, 6000.0.0b11
Reproducible with:
- iPhone 14 Pro Max (iOS 16.3.1)
- iPhone 13 Pro (user-supplied information)
Not reproducible with:
- iPad Air 4th Gen (iOS 15.2.1)
- iPad Pro (9.7 inch, Wifi) (iOS 14.8)
Notes:
- The Project caps Target Framerate to 60, the spikes display it dropping to 30 on touch
Comments (3)
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dnecesal
Sep 19, 2025 11:13
Changing OnDemandRendering.renderFrameInterval > 1 will freeze the whole main thread after upgrading to Unity 6000.0.56f1
This was not case in the 52f1 update.
This metal link is the cause of that. Can you please investigate?
sgoncharme
Aug 23, 2025 03:02
probably this change also breaks our iOS + Unity integration. still investigating. 55 is fine. 56 is broken.
unity_F739CF18E1E60351BE4C
Aug 08, 2025 23:13
This change breaks/disables the rendering of Canvas UI in Screen Space – Camera mode when the application is not focused/active on iOS.