LoL, I still use Poser 5 to convert heir files and rig my models. I texture in Poser 2012pro and Render in Poser 11 Pro.  I use firefly exclusively and as mentioned earlier, the Superfly and Iray render engines do have that dotty-film grainy look to them that I absolutely cannot stand plus the render times are horrendous just to wait and spot a mistake.

I have an i9 processor, 64 gigs ram and RTX 2080. When I do a render I do hear that graphics card wind up for cooling, so it must be drawing some power from the card, maybe? I dunno such things.

Primorge: Thanks for the compliment :-)  I call it Hybrid 3d rendering cuz I want it to look more graphic/hand drawn but it is reality a 3d render.  I have a process to get the style of final image I want.  I absolutely cringe when I look back at some of my old works and wish people did not judge me based on that, lol.  If folks would like to see what I have evolved my art style too, let me know, I'll post a ... uh... 'tame' picture here.

Davo