Issue with I-ray in substance painter

Noobsaurus

Hi guys, a while ago I gave Iray in substance a try but I noticed a lot of oddity with it. Here is a test model I did -
right version: smoothed edges on any edge thats less than 90 degree
left version: hard edge and cut in uv so the shading can be closer to the high poly



here is high poly:


I brought it into Substance painter, after baking it looks fine in the viewport:


but in Iray:



it looks fine in unreal though:


any idea whats going on?

here are my hp and lp fbx:
lp: https://drive.google.com/open?id=1O98vysMPGiUAfn1Q2ix8uBkORObMqzEG
hp: https://drive.google.com/open?id=1nBm5ftxaBv1h4hPwgCjVFgC5df6Vw15L

Jerc

There are some issues with Iray and the tangent basis in Painter, these should be fixed in an upcoming update.

cptSwing

Oh, good to hear! Have been having problems as well.