The iRay devs reported a few weeks ago that iRay “2020.0 final has just been released”. Strand fibers do “especially well” with the new iRay 2020 + an RTX graphics card, even fibres with dense intersections.
iRay 2020… “introduces native fiber intersection support! This delivers perfectly smooth hair, fur, carpet, and similar curve-based primitives out-of-the-box, without paying for extra memory and/or additional pre-computation time for tessellation to triangle-data!”
Good news for fur render speed and for Look At My Hair users. Though not quite yet, as the latest iRay in DAZ Studio is currently 2019.1.4. But it can’t be long until 2020.1 gets plugged in.
Several other major bits of software are also doing short hair, KeyShot 9 has its new “fuzz”, and Lightwave 2020 also adds new shaders and easier controls to its existing FiberFX.