Search Issue Tracker
By Design
Votes
0
Found in [Package]
Issue ID
1335050
Regression
No
[ARFoundation] CpuImages sample's framerate drops significantly
Reproduction steps:
1. Download and open the attached "arfoundation-samples.zip"
2. Build and deploy for iOS
3. Move the phone camera around
Expected result: The framerate doesn't noticeably drop
Actual result: The framerate noticeably drops
Reproducible with: 2019.4.28f1, 2020.3.11f1, 2021.1.10f1, 2021.2.0a20
Reproduced with: iPhone 12 Pro (iOS 14.2.1), iPhone 12 Pro Max (Usert Information)
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Crash on MonoBehaviour::CallMethodIfAvailable when performing various actions
- Incorrect rotations on bones when importing FBX animations with a Humanoid Rig
- Render Graph Viewer “Pass List” section is flickering when resizing vertically and the Render Graph Viewer window is docked
- Render Graph Viewer Capture button plays the click animation but does not do anything when the Capture button is pressed with the “Enter” key on the keyboard
- UI Builder Scrollview is unable to scroll all the way down when the window is downsized vertically
Resolution Note:
The description sounds like the device is entering into thermal throttling. Thermal throttling occurs when your device heats up excessively due to a number of components being simultaneously active. When iOS enters into a high thermal state, iOS will throttle features and the frame rate on the device to reduce the generated heat until the device cools off.
The iPhone 12 Pro and iPhone 12 Pro Max both have LiDAR sensors which contribute significantly to the thermal state. The iPad Mini and the iPhone SE do not have a LiDAR sensor.
This forum post describes the thermal effects, how to detect the thermal state in your code, and how to take action to avoid entering thermal throttling. https://forum.unity.com/threads/ar-foundation-support-for-iphone-12-pro-with-lidar.987810/