I recently got this capture card (Mirabox 4K Passthrough) it says I can set the framerate to 60 FPS but when I look at the preview and then the recording, it shows it goes to 30. I have read some things on the forums saying something about my color range and gpu overloading and other display captures/ game captures interfering with it, but I have a feeling it's something else. My computer actually isn't all that great but I have no problems with lagging and high encoding issues.