If hardware acceleration is switched on/off in AutoCAD, performance problems arise.
The cause was determined through in-depth analysis. Attached is a video showing how it was received.
Here is a short description:
Switching hardware acceleration on takes several seconds.
- AutoCAD is started with hardware acceleration on. ViewCube works normally.
- User switches hardware acceleration off. ViewCube works normally.
- User switches hardware acceleration on.
- Up to 20 seconds the viewcube does not respond to MouseOver and complete AutoCAD is not responding!
- The screen turns black for a few seconds
- Then the viewcube re-appers and works normally.
So there was no response for about 25 seconds
Reason:
The behavior occurs when a second Windows operating system language pack is installed and the
Windows display language is changed. The behavior could be reproduced on different computers with AutoCAD OEM 2024 and AutoCAD 2024.
Solution\Workaround:
The reason for this is an entry that is created in the registry of the operating system by Windows:
[HKEY_CURRENT_USER\Control Panel\Desktop]
“PreferredUILanguages”=hex(7):65,00,6e,00,2d,00,55,00,53,00,00,00,00,00
If you delete the entry everything works fine again.