In ultra mode:is slower than in Vue4 because e-on found that it was a little bit noisy in some cases, they therefore raised the anti-aliasing quality threshold and, moreover, there is texture anti-aliasing which is applied, a feature that was not available in Vue4, which slows down rendering, but reduces moirpatterns significantly, for high spacial frequency materials. Superior mode is the rendering level I use and find much quicker. `shoop