I suppose since other engines got their hands hard on gpu rendering, Refractive guys should have been working too hard to finish the software. I salute them all..
Last releases I suffered a lot from crashing or freezing. So now I am actually waiting for a decent stable release where I can actually use the software for my needs.
I do visit the forum every 2/3 days

but I currently find myself dealing more with iray in order to practice it other than octane. As well as it has glitches and compability issues. But it fits in my pipeline.
Actually I do not want to try pre_v6 to use it in my workflow. I would love to test the final v 1.0 and willing to pay for v2.0 to donate the process.