> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/e3d-user-manual/interface/toc175916526/toc442029162/toc442029169.md).

# Enable/Disable Hardware Acceleration

How to enable or disable OpenGL hardware acceleration to address graphics issues in ENERCALC 3D.

Settings > Enable/Disable Hardware Acceleration allows you to turn on or off OpenGL hardware acceleration. By default, OpenGL hardware acceleration is turned on. If you encounter graphics problems (due to faulty graphics drivers) in the software, you may want to try to disable hardware acceleration. The graphics performance may degrade significantly but should be acceptable on most modern systems.


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