Fire. I also love the accuracy for the genitals(I use female). My PC is quite slow so it's bit hard for me to fully enjoy but it's very satisfying. Can't wait for more. The artwork you have it down pat.
I'm glad you like it! I will likely be doing mostly 3D for future projects, as I struggle to get myself to draw but enjoy programming and 3D stuff. I may make other 2D projects, especially in collaboration with other artists.
For performance issues, have you tried both the regular build and the Vulkan build? You may have better performance with or the other.