Maybe the devs can take a look at how to improve the rounded edges algorithm. It looks fine with small values but when they get a big higher, in some cases they fall apart and the results look really ugly. I did a comparison in Cycles and the algorithm is much better there. It's not something I need all the time, but then and now I need to get a bit closer to objects and then the issues really show.
I've attached a comparison.
And here's an OBJ file that shows the corner in the render test. A rounded edge value of 0.05 was used in both cases (Cycles and Octane).
https://www.argfx.at/upload/RE_Test_01.zip