Hi champion-jump,

You could use the Project
Main Menu> Windows> Asset Inspector> Asset> Reload all Images,
or take this command from the
Main Menu> Windows> Customization> Commands (Perhaps set up a shortcut for it or have the icon in the interface.

However, that might take a while, especially with Redshift 3D, as any renewed texture needs to be loaded and optimized for the GPU again. Hence, constantly checking all content would slow down the process.

You can also suggest this idea to Maxon directly
https://www.maxon.net/en/support-center
"Share Your Ideas"

All the best