Hello!
(I originally posted this in the 2025.3.0 release thread, but reposting here for appropriate categorization.)
I'm seeing a strange performance issue that I suspect is related to the new IPR QT5 overhaul.
I've been able to replicate this issue consistently across different scenes, both complex and extremely simple. After the IPR image posts, zooming in/out and panning around the IPR eventually leads to a full Houdini crash. This typically occurs after roughly 10-15 seconds of the IPR running, and appears specifically tied to zooming in/out.
I've recorded the Octane Debug Log, and will attach here for reference. Across all attempts to diagnose this, the crash happens when this action is taken: 'Drawing the raster buffer in the Qt5 image window'.
Here's some relevant information:
Houdini: 20.5.684
Octane: 2025.3.0.0
Windows 10 Pro, OS Build 19045.6456
NVIDIA Studio Driver: 581.57
CPU: Intel(R) Xeon(R) W-3175X CPU @3.10GHz
GPU: NVIDIA GeForce RTX 3090
RAM: 64 GB
You'll find attached:
- Screen recording of the issue
- Troubleshoot HIP file
- Octane Debug Log
Thanks,
Aaron
QT5 IPR - Consistent Crashing when Zoom/Pan
Moderator: juanjgon
Forum rules
Before posting a bug report, please check the following:
1. That the issue has not already been disclosed
2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.
All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
Before posting a bug report, please check the following:
1. That the issue has not already been disclosed
2. That the issue is specific to this plugin, and not Octane in general (Try reproducing it in Standalone)
Bugs related to the Octane Engine itself should be posted into the Standalone Support sub-forum.
All bug reports should include the information below, along with a detailed description of the issue and steps to reproduce it.
A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
F. OctaneRender plugin version (i.e. v2.25 - 2.21)
G. Host application version, including build number if available (i.e. 3ds Max 2016 Build 18.0)
- Attachments
-
- QT5_IPR_ScreenCapture.mp4
- (8.93 MiB) Downloaded 5 times
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- DebugLog.log
- (335.37 KiB) Downloaded 4 times
-
- Troubleshoot_Files.zip
- (3.33 MiB) Downloaded 3 times