Renderer Problems

Hello Blackmagics
I have a problem when I project a picture on a geometry imported via fbx. The openGL renderer delivers very low quality. Z-Buffer sorted works best but is poor in antialiasing of the picture. Best result I achieved with software renderer ...But then the background looks bad with big problems in the alpha channel...Whats wrong?
I am working on OSX el capitan with an GTX980 installed...
Thanks for help

Try enabling the "SS" ( supersampling) button beside the output channel you're wanting to anti alias. With your HiQ enabled, you should see some decent anti-aliasing.

Solved!