Just got the Red shift Alpha and HFSB's its fast. Coming from Octane I was a little 'EH?' but been diving into some tutorials and I like it, while the node editor isn't as nice looking as Cycles, The native shaders are pretty versatile, testing away and so far so good. Might set up a couple of scenes one I rendered in octane and try and recreate it in redshift and do a comparison.
An initial experiment with a dome light and an HDRI which wouldn't resolve its noise for some reason was interesting, but then just changed HDRIs and it was ok again phew.
I've followed this thread and see you've had the same *** moment on some of the extreme settings (or reverse) i've had, as in things are changed by 0.001 of increments which seems a little nuts but I guess just a quirk of the renderer.
One area im really impressed by is the volume lights, Octane just slows to a crawl but Redshift just chewed through a volume area light like nothing
I must say its pretty incredible
Anywho testing and more testing, defo a steeper learning curve but nothing crazy.