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The following parameters are added to the list of visible settings available from the System rollout when set to the Advanced Render UI Mode.

Reverse bucket sequence – Reverses the region sequence order.

Previous (render) – Determines what should be done with the previous image in the virtual frame buffer when rendering starts. Note that this parameter has no effect on the final result of the rendering; it is implemented simply as a convenient way to distinguish between parts of the current frame being rendered, and parts left over from the previous rendering. The possible values are:

Unchanged – No changes are made - the virtual frame buffer remains the same.
Cross – Every second pixel of the image is set to black.
Fields – Every other line of the image is set to black.
Darken – The colors in the image are darkened.
Blue – The previous image is tinted in blue.
Clear – Removes the previous frame for the VFB.

Conserve memory -Embree will use a more compact method for storing triangles, which might be slightly slower but reduces memory usage.

Static– All geometry is precompiled into an acceleration structure at the beginning of the rendering and remains there until the end of the frame. The static raycasters are not limited in any way and will consume as much memory as necessary. 
Dynamic – Geometry is loaded and unloaded on the fly depending on which part of the scene is being rendered. The total memory taken up by the dynamic raycasters can be controlled by the Dynamic memory limit parameter.
Auto – Some objects are compiled as static geometry, while others as dynamic. V-Ray makes the decision on which type to use based on the face count for an object and the number of its instances in the scene.

Frame stamp - Turns frame stamps on or off. The frame stamp records information about the scene as text on the rendered images. For example, frame stamps can be used with network rendering to record which frames were rendered by which machine. The frame stamp appears as one line of text at the top or bottom of the image.

Stamp textbox - Text entered into this field will appear in the images. Special keywords can also be used, as long as they begin with the percent symbol (%). The keywords are replaced by V-Ray with the corresponding value. The VRay Frame Buffer shows a list of such keywords.

Full width – When enabled, the frame stamp takes the whole width of the image, otherwise the stamp is only as wide as the text is.

Justify – Specifies the position of the stamp:

Left – The stamp is placed on the left of the image. 
Center – The stamp is centered. 
Right – The stamp is placed on the right side of the image.

Font – Allows you to choose a font and font attributes for the text in the frame stamp.

Log window – Determines the conditions for showing the log.

Verbose level – Determines what kind of messages are shown in the window:

1 – Only error messages. 
2 – Error and warning messages. 
3 – Errors, warnings, and informative messages. 
4 – All messages.

Log file – Determines the location and the name of the log file. The default log file is %TEMP%\VRayLog.txt

Memory tracking - When enabled, generates a memory usage report for textures and objects. For more information, visit the Memory Tracking page.

Output directory - Determines the location of the memory tracking files.

Show latest stats - Displays the last memory usage report generated.

Check for missing files – When enabled, V-Ray tries to find any missing files in the scene and puts up a dialogue listing them, if there are any. The missing files also are printed to the C:\VRayLog.txt file.

If this option is on, and you render the scene with distributed rendering, and if a render server detects missing files, it refuses to render the scene.

If the option is on, and you export a .vrscene file, and if there are missing assets, Standalone refuses to render the scene.