well, this line in the plugin has me concerned, because the context init’d from CGLGetCurrentContext() may not exist by the time it is published later on. When you resize/fullscreen/etc a unity window, it destroys and recreates the context. I’m not sure if this could lead to that grinding effect – usually if something like that were to cause an issue you will simply see nothing on screen. But it’s something I noticed in another plugin I’ve been working on and need to figure out a good solution for this one as well.
if(_unitySyphonServer == nil)
{
_unitySyphonServer = [[SyphonServer alloc] initWithName:@"Demo" context:CGLGetCurrentContext() options:nil];
NSLog(@"creating Syphon Server");
}