Render Setup dialog
Common panel
Common Parameters rollout
Bitmap Proxies group
Setup
Asset Tracking dialog
Proxies menu
Global Settings
Asset Tracking dialog
Highlight bitmap asset(s).
Proxies menu
Set Proxy Resolution
Asset Tracking dialog
Right-click a bitmap asset.
Set Proxy Resolution
This dialog lets you determine how 3ds Max should create and use proxy versions of bitmaps incorporated in materials. It also lets you disable or enable bitmap paging.
Proxies are intended for use primarily in the viewports when building and editing scenes to reduce the amount of memory required by the bitmapped textures, but you can also use them at render time.

The label and function of the first check box on the dialog depends on whether you invoked it with Setup/Global Settings command or Set Proxy Resolution:
Use the drop-down list to choose the fraction to which the proxy system reduces the bitmap(s): Full (no reduction), Half, Third, Quarter, or Eighth. The greater the reduction, the greater the memory savings and speed improvement, especially in a scene with many maps, but the less recognizable the map.
These settings are available only when you open the dialog using the Setup or Global Settings commands cited at the top of this topic.
This read-only field displays
the path in which 3ds Max stores proxy bitmap files. To change
the path, go to Configure User Paths
File
I/O and edit the BitmapProxies entry.
Textures and Rendered Images Memory
Options group
This field shows the path name of the folder where the page file is saved.
To change the location of the page file, use the Configure System Paths command.
Saves the dialog settings and closes the dialog but does not generate proxy bitmaps. You must generate the proxies manually using the Generate Selected/Stale Proxies command from the Asset Tracking dialog.