A number of RenderMan-specific preferences can be set via the Preferences option found under the RenderMan menu.

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Live Stats

Enable
Enables the Live Stats server.

Websocket Host 
Host used by the server

Websocket Port
Port used by the server 

Settings used by the Live Stats system including Host IP and Websocket port.
Log Level will change
Changes the verbosity level of the stats system

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TxManager

Fallback path
By default, the .tex file will be written in the same directory as the source image file.  If this directory is not writable, the texture manager will write to the fallback directory instead.

Tex Extension
The texture manager will not convert any file with one of these extensions and will be used as-is.  Entries should be space-delimited

Workers
The number of txmake processes to launch in parallel.  The default is 2 (assuming you have a typical 4-core machine).  You can increase this number only if you have more than 8 physical cores.

Always Fallback
If this is on, we will only use the directory specified in the Fallback path option.

Keep extension
If on, keep the original extension of the input image

Show Advanced
If on, show advanced settings in the Texture Manager panel.