It is well-known, that Photoshop is supporting a GPU-processing for working with images (when a graphics card is working with showing and calculating some effects)
I thought that this feature would be good to be implemented in ArtRage
Especially for layers with dump (Oil paintings) - this should really speed up the working with such paintings, because bumping is one of the most important features in modern games, and GPU should take it easily for ArtRage's bump
Also it would help to adjust lighting (change light source's position, color, density, etc.) - this feature was asked about before by other users

I don't know if it can actually be implemented in ArtRage, just thought that this could be really useful for optimizing the program