Set rayon thread pool size to be 2 in magicleap demo

demo/magicleap/src/lib.rs

@@ -38,6 +38,7 @@ pub extern "C" fn magicleap_pathfinder_demo(egl_display: EGLDisplay, egl_context
     options.ui = false;
     options.background = Background::None;
     options.mode = Mode::VR;
+    options.jobs = Some(2);
 
     let mut app = DemoApp::new(window, window_size, options);
     debug!("Initialized app");