today I installed a GTX1080Ti (EVGA GeForce GTX 1080 Ti FTW3 GAMING 11GB) and ... I wonder that the GPU isn't so heavy used like expected. I have seen request for multiple GPU but it looks like there is quite a lot of potential at single GPU usage that could be enabled before. The fans of the card never started to noticeable run.
For example I have a complex train interior and I walk through per arrow keys - average GPU usage approx. 33% and the display quality is still basic. If I stop than the rendering needs 3..4s to finalize - approximated average GPU usage maybe 50%. I rendered an animation at 1080p - average GPU usage 37%.
Animation at 4k is using 98% GPU power. That's great, but here it's a problem to play the file later. Most video players are not ready to show 4k.
Also in mirrors the most of the scene is invisible, but the whole system Enscape+Rhino+WINDOWS is using 4GB of 11GB only.
So my request - please allow to stronger use the power and memory of high end cards. Looks like there are resources to let it run on doubled or more speed.
Sorry for bringing the bad news. I hope some improvements are possible.