ironsoul posted at 11:41AM Tue, 22 October 2019 - #4367924

Most likely a futile, "throw enough mud at the wall" type suggestion - considering the impact of the dual card. Could Windows and Poser be offloading display and OpenGL rendering onto the 1050 leaving the 1080ti free for ray tracing only? One thought is these two functions are throttling the 1080ti. It is possible to control how CUDA is used in the Nividia control panel 3d settings so it may be possible to mimic this behaviour when using one card only.

Maybe? That's over my head to be honest. But I mean if I'm not using the 1050 Ti to render, meaning it's set in Render Settings to only use the 1080, then the 1050 should not be involved in the render at all. At least in my mind anyway. Also, I don't think it explains the behavior that the 1050 Ti is faster on its own, and the two cards together work correctly and are way faster than either card alone.