Viewport Preview now that software render is gone?

[jessestormer]

In R21, software render seems to be... gone? And because Hardware render doesn't work for creating viewport previews... how do we create a quick/fast viewport preview now?

[jessestormer]

I have an update for this: it looks like Octane 2020 XB3 isn't rendering octane materials for hardware rendering - I tried this in R20 and R21 with the same result
however, 2019 Build works fine for hardware rendering octane materials