Looks good matey, have you shared the ShaderFX file anywhere? I tried to recreate your graph from the picture but none of the available nodes in ShaderFX give me the texcoord with the RG outputs you have on the left? Ta!
@eCstatic Best to open a separate thread in tech talk with your shaderfx graph and most importantly open the property panel showing settings for your BaseColor/Normal/RMA texture node. If the textures are ok (and if you haven't checked, you should), then you likely messed up a setting.
I am sorry to bump this thread, but I am basically see a situation where Maya decides it doesn't want to apply the roughness map I give her. ShaderFX nodes, Material graph, and Material settings looks right to me. But roughness just isn't applied, Maya renders my texture with a glossy map (which appears to be a flat 0…