1. What is Virtual Memory?

When working on complex Scenes, Lumion may sometimes run out of Graphics Card Memory and System Memory (for example when importing a very large model).

If that happens, it will start to use Virtual Memory. This memory type relies on free space on the harddisk.

Please follow the instructions below if we ask you to increase the amount of Virtual Memory.

We recommend at least 50GB, and for very complex Scenes from 100GB to 150GB.

2. Here's how to increase the amount of Virtual Memory:

2.1: Windows 10:

1. Click on this link.  
   External Link: Tips to improve PC performance in Windows 10
2. Click on 3. Check memory and memory usage and follow the instructions in the paragraph called 'Change the paging file size to improve performance'.
3. Note that you can select any drive you want for Virtual Memory.
4. Enter 100000 MB in both the Initial size and the Maximum size fields.
5. Click 'OK' and restart the PC.

2.2: Windows 7 and Windows 8.1:

1. Click on the link below and follow the instructions in the section 'Change the size of virtual memory' at the bottom of the page:
   Webpage link: Optimize Windows for better performance
2. Note that you can select any drive you want for the Virtual Memory.
3. Enter 100000 in both the Initial size and the Maximum size fields.
4. Click 'OK' and restart the PC.
5. Restart the PC.

See also:

Knowledge Base: Section 6: Verify that there is sufficient Virtual Memory