When I have 2 different materials right next to each other Iray seems to introduce a "bleeding effect" on the textures. In one software it works fine, but inside Iray the textures bleed at the edges.

Sunstance Painter Preview

Iray's bleeding of the edges, gray on the golden rim, gold on some of the pattern above

Albedo with uvmap overlaid on top

I have tried so far:

1. Using colorID's
2. Splitting apart the uv map for the main dress itself and the golden rim

Neither seems to be a solution to prevent this jagged bleeding effect.

Found the solution, had to increase the medium/high threshhold in the render settings under the advanced tab!