osX model.drawWireframe() super slow

Back in OS X 10.8 with OF 0.8.0 i was able to run an app that draws an ofxAssimpModelLoader model’s faces and wireframe without my fps dropping too much.

But when compiling on OS X 10.10 with OF 0.9.0 and later my fps drops to 5 as soon as i call model.drawWireframe().

Why would this be?

 if(bShowModel){
        ofEnableSmoothing();
        ofEnableAlphaBlending() ;
  
        model.disableColors();
        
        if(modelAlpha != 0){
            ofSetColor(0,0,0,modelAlpha);
            model.drawFaces();
        }
        if(wireAlpha != 0){
            ofSetColor(0,0,0,wireAlpha);
            model.drawWireframe();
        }
        
        model.enableColors();
 
        ofDisableAlphaBlending();
        ofDisableSmoothing();

    }

maybe it has to do with the same bug that does not allow one to set optimize to true ?

ofxAssimpModelLoader::loadModel(string modelName, bool optimize=false)