Performance issues and troubleshooting
Performance issues
Forms can be a bit slow, which is especially noticeable if you are using text input on a slower system. If you find that forms are too slow, you can do a number of things:
- Switch to the legacy back-end and set Double buffering to ‘no’ in the back-end settings.
- Switch to the xpyriment back-end and set OpenGL to ‘no’ in the back-end settings. Please note that this will disable hardware acceleration and decrease the precision of the display-presentation timestamps.
- Reduce the number of elements that are visible on the form. The speed with which the form is rendered is directly proportional to the total surface of all its elements.
Troubleshooting
- If you are using the legacy back-end, you may find that the forms do not show: The screen is black, except for an occasional flicker when you click the mouse. This issue can be resolved by setting Double buffering to ‘no’ in the back-end settings.
- If you are using the legacy back-end, you may find that the mouse cursor is not visible. For a workaround, see /back-ends/legacy/.
